pinctrl: sh-pfc: Make legacy function GPIO handling less fragile
If there are no function GPIOs, sh_pfc_register_gpiochip() returns early with a success indicator. This is fragile, as new code may be added after the #ifdef block, which won't be executed in case of early return. Invert the logic, so the code always continues until the end of the function on success. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Link: https://lore.kernel.org/r/20191113101809.28600-1-geert+renesas@glider.be
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