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>

drivers/pinctrl/pinctrl-coh901.c

@@ -713,11 +713,6 @@ static int __init u300_gpio_probe(struct platform_device *pdev)
 	gpio->dev = &pdev->dev;
 
 	memres = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!memres) {
-		dev_err(gpio->dev, "could not get GPIO memory resource\n");
-		return -ENODEV;
-	}
-
 	gpio->base = devm_ioremap_resource(&pdev->dev, memres);
 	if (IS_ERR(gpio->base))
 		return PTR_ERR(gpio->base);

drivers/pinctrl/pinctrl-exynos5440.c

@@ -1000,11 +1000,6 @@ static int exynos5440_pinctrl_probe(struct platform_device *pdev)
 	}
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(dev, "cannot find IO resource\n");
-		return -ENOENT;
-	}
-
 	priv->reg_base = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(priv->reg_base))
 		return PTR_ERR(priv->reg_base);

drivers/pinctrl/pinctrl-samsung.c

@@ -932,11 +932,6 @@ static int samsung_pinctrl_probe(struct platform_device *pdev)
 	drvdata->dev = dev;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(dev, "cannot find IO resource\n");
-		return -ENOENT;
-	}
-
 	drvdata->virt_base = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(drvdata->virt_base))
 		return PTR_ERR(drvdata->virt_base);

drivers/pinctrl/pinctrl-xway.c

@@ -716,10 +716,6 @@ static int pinmux_xway_probe(struct platform_device *pdev)
 
 	/* get and remap our register range */
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(&pdev->dev, "Failed to get resource\n");
-		return -ENOENT;
-	}
 	xway_info.membase[0] = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(xway_info.membase[0]))
 		return PTR_ERR(xway_info.membase[0]);