pinctrl: mediatek: paris: fix return value check in mtk_paris_pinctrl_probe()

In case of error, the function devm_kmalloc_array() returns NULL pointer
not ERR_PTR(). The IS_ERR() test in the return value check should be
replaced with NULL test.

Fixes: 80525098 ("pinctrl: mediatek: add pinctrl-paris that implements the vendor dt-bindings")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/mediatek/pinctrl-paris.c

@@ -836,8 +836,8 @@ int mtk_paris_pinctrl_probe(struct platform_device *pdev,
 
 	hw->base = devm_kmalloc_array(&pdev->dev, hw->soc->nbase_names,
 				      sizeof(*hw->base), GFP_KERNEL);
-	if (IS_ERR(hw->base))
-		return PTR_ERR(hw->base);
+	if (!hw->base)
+		return -ENOMEM;
 
 	for (i = 0; i < hw->soc->nbase_names; i++) {
 		res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
@@ -863,8 +863,8 @@ int mtk_paris_pinctrl_probe(struct platform_device *pdev,
 	/* Copy from internal struct mtk_pin_desc to register to the core */
 	pins = devm_kmalloc_array(&pdev->dev, hw->soc->npins, sizeof(*pins),
 				  GFP_KERNEL);
-	if (IS_ERR(pins))
-		return PTR_ERR(pins);
+	if (!pins)
+		return -ENOMEM;
 
 	for (i = 0; i < hw->soc->npins; i++) {
 		pins[i].number = hw->soc->pins[i].number;