drm/amdgpu: cancel late_init_work before gpu reset

gpu reset will run late_init and schedule the late_init_work.  if we
keep triggering gpu reset in a short time, there are potenial races.
Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

@@ -3593,6 +3593,8 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
 
 	dev_info(adev->dev, "GPU reset begin!\n");
 
+	cancel_delayed_work_sync(&adev->late_init_work);
+
 	hive = amdgpu_get_xgmi_hive(adev, false);
 
 	/*