drivers/pinctrl: don't check resource with devm_ioremap_resource

devm_ioremap_resource does sanity checks on the given resource. No need to
duplicate this in the driver.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-at91.c

@@ -1543,12 +1543,6 @@ static int at91_gpio_probe(struct platform_device *pdev)
 		goto err;
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		ret = -ENOENT;
-		goto err;
-	}
-
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
 		ret = irq;
@@ -1561,6 +1555,7 @@ static int at91_gpio_probe(struct platform_device *pdev)
 		goto err;
 	}
 
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	at91_chip->regbase = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(at91_chip->regbase)) {
 		ret = PTR_ERR(at91_chip->regbase);