Use devm_* api to simplify code, this makes it unnecessary to explicitly
release resources.
Signed-off-by: Yangtao Li <frank.li@vivo.com>
Link: https://lore.kernel.org/r/20230705052346.39337-8-frank.li@vivo.comSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>