SWDEV-474091 – Fix sporadic crash in streamcallback test

Also in the scope of SWDEV-467540.
Fix sporadic crash in Unit_hipStreamAddCallback_MultipleThreads by
deferring release() of block_command.
The test will invoke 1000 threads on the same stream thus there
is a chance to free block_command too early in original code.
By deferring release() of block_command we can make sure block_command
is always valid during calling block_command->notifyCmdQueue().

Change-Id: I31555ee18e6958e34b89f04181867fa4e932a38c


[ROCm/clr commit: e3ef19e22a]

projects/clr/hipamd/src/hip_stream.cpp

@@ -581,13 +581,13 @@ hipError_t streamCallback_common(hipStream_t stream, StreamCallback* cbo, void*
     return hipErrorInvalidValue;
   }
   block_command->enqueue();
-  block_command->release();
 
   // Release the callback marker
   command->release();
   // Notify the command queue about a possible waiter for the calback
   block_command->notifyCmdQueue();
 
+  block_command->release();
   return hipSuccess;
 }