add try-catch when call setAttention method

Currently, users can use btbridge/ssifbridge/kcsbridge to interact BMC
and HOST. But only btbridge define "org.openbmc.HostIpmi", therefore, if
the platform does not use btbridge, host-ipmid will throw an exception
when try to check the status of HOST when call setAttention method.
This commit adds the try-catch to make platform still work moothly when
uses ssifbridge/kcsbridge.

Tested:
      1. Use ssifbridge to interact BMC and HOST.
      2. Check Host condition.
         busctl introspect xyz.openbmc_project.Control.Host \
         /xyz/openbmc_project/control/host0
      3. Display information of "/xyz/openbmc_project/control/host0"

Signed-off-by: Thang Tran <thuutran@amperecomputing.com>
Change-Id: I63e584c1f89c6b31de4fa66beb3f0e0b6bdf5e0f
diff --git a/host-cmd-manager.cpp b/host-cmd-manager.cpp
index e52c9bb..b3aeb5a 100644
--- a/host-cmd-manager.cpp
+++ b/host-cmd-manager.cpp
@@ -130,14 +130,17 @@
         auto method =
             this->bus.new_method_call(HOST_IPMI_SVC.c_str(), IPMI_PATH.c_str(),
                                       IPMI_INTERFACE.c_str(), "setAttention");
-        auto reply = this->bus.call(method);
 
-        if (reply.is_method_error())
+        try
         {
-            log<level::ERR>("Error in setting SMS attention");
-            elog<InternalFailure>();
+            auto reply = this->bus.call(method);
+
+            log<level::DEBUG>("SMS Attention asserted");
         }
-        log<level::DEBUG>("SMS Attention asserted");
+        catch (sdbusplus::exception::exception& e)
+        {
+            log<level::ERR>("Error when call setAttention method");
+        }
     }
 }