Revert "Fix return value for the pldm_send method"

This reverts commit 4d25f6a6f4a027d51863393e55cb770ededf0358.

Reason for revert: <sendMsg returns the number of bytes transferred in success. that is being treated as error response as per current code. blocking Host to power on. Reverting for now until we find a better solution>

Change-Id: I606f0245075e38eb99de74219453dc5f781d46b7
diff --git a/softoff/softoff.cpp b/softoff/softoff.cpp
index 14bc670..d215c1d 100644
--- a/softoff/softoff.cpp
+++ b/softoff/softoff.cpp
@@ -411,7 +411,7 @@
 
     // Send PLDM Request message - pldm_send doesn't wait for response
     rc = pldm_send(mctpEID, fd, requestMsg.data(), requestMsg.size());
-    if (rc != PLDM_REQUESTER_SUCCESS)
+    if (0 > rc)
     {
         std::cerr << "Failed to send message/receive response. RC = " << rc
                   << ", errno = " << errno << "\n";