pinctrl: cs42l43: Fix leaked pm reference on error path

pinctrl: cs42l43: Fix leaked pm reference on error path

Returning directly if the regmap_update_bits() fails causes a pm runtime
reference to be leaked, let things run to the end of the function
instead.

Fixes: e52c741907fb ("pinctrl: cirrus: cs42l43: use new GPIO line value setter callbacks")
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>