The driver misses destroying wdt_wq when remove like what is done when
probe fails.
Add the missed calls like what is done to job_wq to fix it.
Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
        mtk_mdp_unregister_m2m_device(mdp);
        v4l2_device_unregister(&mdp->v4l2_dev);
 
+       flush_workqueue(mdp->wdt_wq);
+       destroy_workqueue(mdp->wdt_wq);
+
        flush_workqueue(mdp->job_wq);
        destroy_workqueue(mdp->job_wq);