drivers/char/hw_random: 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/char/hw_random/mxc-rnga.c

@@ -167,11 +167,6 @@ static int __init mxc_rnga_probe(struct platform_device *pdev)
 	clk_prepare_enable(mxc_rng->clk);
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		err = -ENOENT;
-		goto err_region;
-	}
-
 	mxc_rng->mem = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(mxc_rng->mem)) {
 		err = PTR_ERR(mxc_rng->mem);
@@ -189,7 +184,6 @@ static int __init mxc_rnga_probe(struct platform_device *pdev)
 	return 0;
 
 err_ioremap:
-err_region:
 	clk_disable_unprepare(mxc_rng->clk);
 
 out:

drivers/char/hw_random/omap-rng.c

@@ -119,11 +119,6 @@ static int omap_rng_probe(struct platform_device *pdev)
 	dev_set_drvdata(&pdev->dev, priv);
 
 	priv->mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!priv->mem_res) {
-		ret = -ENOENT;
-		goto err_ioremap;
-	}
-
 	priv->base = devm_ioremap_resource(&pdev->dev, priv->mem_res);
 	if (IS_ERR(priv->base)) {
 		ret = PTR_ERR(priv->base);