SWDEV-447384 - Handle double free case.

Change-Id: I7a1d45c2f7510180911507d56ec863982b161f6c

hipamd/src/hip_mempool.cpp

@@ -171,6 +171,8 @@ hipError_t hipFreeAsync(void* dev_ptr, hipStream_t stream) {
         // The current implementation has unconditional waits
         return ihipFree(dev_ptr);
       }
+    } else {
+      HIP_RETURN(hipErrorInvalidValue);
     }
   } else {
     if (!AMD_DIRECT_DISPATCH) {