SWDEV-457316 - Multiple graph exec can be for given stream.

Change-Id: I0f1b184eb63e0432119d62f094637d375a3d4e55

hipamd/src/hip_graph_internal.cpp

@@ -894,7 +894,6 @@ void ReleaseGraphExec(hip::Stream* stream) {
         (itr->first)->release();
       }
       GraphExecStatus_.erase(itr++);
-      break;
     } else {
       ++itr;
     }