SWDEV-482130 - Fix release of virtual mem obj

Change-Id: I893a8353aa1a25d00e36c8e601caf31cc0fc1f22

hipamd/src/hip_mempool_impl.cpp

@@ -95,8 +95,14 @@ bool Heap::RemoveMemory(amd::Memory* memory, MemoryTimestamp* ts) {
 Heap::SortedMap::iterator Heap::EraseAllocaton(Heap::SortedMap::iterator& it) {
   auto memory = it->first.second;
   const device::Memory* dev_mem = memory->getDeviceMemory(*device_->devices()[0]);
+  void* dev_mem_vaddr = reinterpret_cast<void*>(dev_mem->virtualAddress());
   total_size_ -= it->first.first;
-  amd::SvmBuffer::free(memory->getContext(), reinterpret_cast<void*>(dev_mem->virtualAddress()));
+  
+  if (dev_mem_vaddr != nullptr) {
+    amd::SvmBuffer::free(memory->getContext(), dev_mem_vaddr);
+  } else {
+    amd::SvmBuffer::free(memory->getContext(), memory->getSvmPtr());
+  }
   // Clear HIP event
   it->second.SetEvent(nullptr);
   // Remove the allocation from the map