pinctrl: mediatek: simplify the return expression of mtk_pinconf_bias_disable_set_rev1()

Simplify the return expression.
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Link: https://lore.kernel.org/r/20201210135902.1548-1-zhengyongjun3@huawei.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c

@@ -488,14 +488,8 @@ EXPORT_SYMBOL_GPL(mtk_pinconf_bias_get);
 int mtk_pinconf_bias_disable_set_rev1(struct mtk_pinctrl *hw,
 				      const struct mtk_pin_desc *desc)
 {
-	int err;
-
-	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PULLEN,
-			       MTK_DISABLE);
-	if (err)
-		return err;
-
-	return 0;
+	return mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PULLEN,
+				MTK_DISABLE);
 }
 EXPORT_SYMBOL_GPL(mtk_pinconf_bias_disable_set_rev1);