pldmtool: Use valid completion code as per spec

Use `PLDM_ERROR_UNEXPECTED_TRANSFER_FLAG_OPERATION` rather than
`PLDM_INVALID_TRANSFER_FLAG_OPERATION` which is inaccurate as per
the pldm spec.

Change-Id: I327f36cc37427b900b0b1d1762e1fd62d28bd21e
Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
diff --git a/pldmtool/pldm_cmd_helper.cpp b/pldmtool/pldm_cmd_helper.cpp
index cbcf827..e488557 100644
--- a/pldmtool/pldm_cmd_helper.cpp
+++ b/pldmtool/pldm_cmd_helper.cpp
@@ -30,7 +30,8 @@
     {PLDM_ERROR_NOT_READY, "ERROR_NOT_READY"},
     {PLDM_ERROR_UNSUPPORTED_PLDM_CMD, "ERROR_UNSUPPORTED_PLDM_CMD"},
     {PLDM_ERROR_INVALID_PLDM_TYPE, "ERROR_INVALID_PLDM_TYPE"},
-    {PLDM_INVALID_TRANSFER_OPERATION_FLAG, "INVALID_TRANSFER_OPERATION_FLAG"}};
+    {PLDM_ERROR_UNEXPECTED_TRANSFER_FLAG_OPERATION,
+     "ERROR_UNEXPECTED_TRANSFER_FLAG_OPERATION"}};
 
 static const std::map<uint8_t, std::string> fwupdateCompletionCodes{
     {PLDM_FWUP_NOT_IN_UPDATE_MODE, "NOT_IN_UPDATE_MODE"},