Revert "pldm: use std::expected for instance ID allocation"

This reverts commit 70262ed7bf854b25d4b65628bc3c892ddfe9380f.

Change-Id: I1f54d6b60bf3cfa9f00764140eec6167e1e182d6
Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
diff --git a/oem/ibm/host-bmc/host_lamp_test.cpp b/oem/ibm/host-bmc/host_lamp_test.cpp
index 1dda9f2..e7485d8 100644
--- a/oem/ibm/host-bmc/host_lamp_test.cpp
+++ b/oem/ibm/host-bmc/host_lamp_test.cpp
@@ -109,13 +109,7 @@
 uint8_t HostLampTest::setHostStateEffecter(uint16_t effecterID)
 {
     constexpr uint8_t effecterCount = 1;
-    auto instanceIdResult =
-        pldm::utils::getInstanceId(instanceIdDb.next(mctp_eid));
-    if (!instanceIdResult)
-    {
-        return PLDM_ERROR;
-    }
-    auto instanceId = instanceIdResult.value();
+    auto instanceId = instanceIdDb.next(mctp_eid);
 
     std::vector<uint8_t> requestMsg(
         sizeof(pldm_msg_hdr) + sizeof(effecterID) + sizeof(effecterCount) +
diff --git a/oem/ibm/libpldmresponder/oem_ibm_handler.cpp b/oem/ibm/libpldmresponder/oem_ibm_handler.cpp
index 34e6d70..decb953 100644
--- a/oem/ibm/libpldmresponder/oem_ibm_handler.cpp
+++ b/oem/ibm/libpldmresponder/oem_ibm_handler.cpp
@@ -524,13 +524,7 @@
     eventClass->sensor_offset = sensorOffset;
     eventClass->event_state = eventState;
     eventClass->previous_event_state = prevEventState;
-    auto instanceIdResult =
-        pldm::utils::getInstanceId(instanceIdDb.next(mctp_eid));
-    if (!instanceIdResult)
-    {
-        return;
-    }
-    auto instanceId = instanceIdResult.value();
+    auto instanceId = instanceIdDb.next(mctp_eid);
     std::vector<uint8_t> requestMsg(
         sizeof(pldm_msg_hdr) + PLDM_PLATFORM_EVENT_MESSAGE_MIN_REQ_BYTES +
         sensorEventDataVec.size());
diff --git a/oem/ibm/libpldmresponder/platform_oem_ibm.cpp b/oem/ibm/libpldmresponder/platform_oem_ibm.cpp
index 0663b01..47c1e53 100644
--- a/oem/ibm/libpldmresponder/platform_oem_ibm.cpp
+++ b/oem/ibm/libpldmresponder/platform_oem_ibm.cpp
@@ -61,12 +61,7 @@
             "ERROR", e);
     }
 
-    auto instanceIdResult = pldm::utils::getInstanceId(instanceIdDb->next(eid));
-    if (!instanceIdResult)
-    {
-        return PLDM_ERROR;
-    }
-    auto instanceId = instanceIdResult.value();
+    auto instanceId = instanceIdDb->next(eid);
 
     std::vector<uint8_t> requestMsg(
         sizeof(pldm_msg_hdr) + sizeof(pldm_bios_attribute_update_event_req) -
diff --git a/oem/ibm/requester/dbus_to_file_handler.cpp b/oem/ibm/requester/dbus_to_file_handler.cpp
index 8bc25af..6ca2975 100644
--- a/oem/ibm/requester/dbus_to_file_handler.cpp
+++ b/oem/ibm/requester/dbus_to_file_handler.cpp
@@ -40,13 +40,7 @@
             "xyz.openbmc_project.bmc.pldm.InternalFailure");
         return;
     }
-    auto instanceIdResult =
-        pldm::utils::getInstanceId(instanceIdDb->next(mctp_eid));
-    if (!instanceIdResult)
-    {
-        return;
-    }
-    auto instanceId = instanceIdResult.value();
+    auto instanceId = instanceIdDb->next(mctp_eid);
     std::vector<uint8_t> requestMsg(
         sizeof(pldm_msg_hdr) + PLDM_NEW_FILE_REQ_BYTES);
     auto request = reinterpret_cast<pldm_msg*>(requestMsg.data());
@@ -258,13 +252,7 @@
             "xyz.openbmc_project.bmc.pldm.InternalFailure");
         return;
     }
-    auto instanceIdResult =
-        pldm::utils::getInstanceId(instanceIdDb->next(mctp_eid));
-    if (!instanceIdResult)
-    {
-        return;
-    }
-    auto instanceId = instanceIdResult.value();
+    auto instanceId = instanceIdDb->next(mctp_eid);
     std::vector<uint8_t> requestMsg(
         sizeof(pldm_msg_hdr) + PLDM_NEW_FILE_REQ_BYTES);
     auto request = reinterpret_cast<pldm_msg*>(requestMsg.data());