Move D3D12 fence SetEventOnCompletion call to fence_wait to avoid stalling on some platforms

drivers/d3d12/rendering_device_driver_d3d12.cpp

@@ -2192,6 +2192,7 @@ RDD::FenceID RenderingDeviceDriverD3D12::fence_create() {
 
 Error RenderingDeviceDriverD3D12::fence_wait(FenceID p_fence) {
 	FenceInfo *fence = (FenceInfo *)(p_fence.id);
+	fence->d3d_fence->SetEventOnCompletion(fence->fence_value, fence->event_handle);
 	DWORD res = WaitForSingleObjectEx(fence->event_handle, INFINITE, FALSE);
 #ifdef PIX_ENABLED
 	PIXNotifyWakeFromFenceSignal(fence->event_handle);
@@ -2286,7 +2287,6 @@ Error RenderingDeviceDriverD3D12::command_queue_execute_and_present(CommandQueue
 			FenceInfo *fence = (FenceInfo *)(p_cmd_fence.id);
 			fence->fence_value++;
 			command_queue->d3d_queue->Signal(fence->d3d_fence.Get(), fence->fence_value);
-			fence->d3d_fence->SetEventOnCompletion(fence->fence_value, fence->event_handle);
 		}
 	}