pinctrl/spear: simplify the return expression of spear300_pinctrl_probe()

Simplify the return expression.

Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20201210135746.1492-1-zhengyongjun3@huawei.com


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