gpio: it87: balance superio enter/exit calls in error path

gpio: it87: balance superio enter/exit calls in error path

We always call superio_enter() in it87_gpio_direction_out() but only
call superio_exit() if the call to it87_gpio_set() succeeds. Move the
label to balance the calls in error path as well.

Fixes: ef877a159072 ("gpio: it87: use new line value setter callbacks")
Reported-by: Daniel Gibson <daniel@gibson.sh>
Closes: https://lore.kernel.org/all/bd0a00e3-9b8c-43e8-8772-e67b91f4c71e@gibson.sh/
Link: https://lore.kernel.org/r/20251210055026.23146-1-bartosz.golaszewski@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>