drm/amdkfd: destroy mutex if process creation fails

Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>

drivers/gpu/drm/amd/amdkfd/kfd_process.c

@@ -329,6 +329,7 @@ err_process_pqm_init:
 	synchronize_rcu();
 	mmu_notifier_unregister_no_release(&process->mmu_notifier, process->mm);
 err_mmu_notifier:
+	mutex_destroy(&process->mutex);
 	kfd_pasid_free(process->pasid);
 err_alloc_pasid:
 	kfree(process->queues);