Convert pm_runtime_enable() to the managed version, and clean up error handling and unnecessary .remove() callback accordingly. Signed-off-by: Fei Shao <fshao@chromium.org> Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com> Suggested-by: Chen-Yu Tsai <wenst@chromium.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>