pinctrl: single: fix missing error code in pcs_probe()

If pinctrl_enable() fails in pcs_probe(), it should return the error code.

Fixes: 8f773bfb ("pinctrl: single: fix possible memory leak when pinctrl_enable() fails")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/20240819024625.154441-1-yangyingliang@huaweicloud.com


Signed-off-by: Linus Walleij <linus.walleij@linaro.org>