drm/etnaviv: Use devm_platform_ioremap_resource()

Use devm_platform_ioremap_resource() to simplify the code a bit.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

drivers/gpu/drm/etnaviv/etnaviv_gpu.c

@@ -1716,7 +1716,6 @@ static int etnaviv_gpu_platform_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct etnaviv_gpu *gpu;
-	struct resource *res;
 	int err;
 
 	gpu = devm_kzalloc(dev, sizeof(*gpu), GFP_KERNEL);
@@ -1728,8 +1727,7 @@ static int etnaviv_gpu_platform_probe(struct platform_device *pdev)
 	mutex_init(&gpu->fence_lock);
 
 	/* Map registers: */
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	gpu->mmio = devm_ioremap_resource(&pdev->dev, res);
+	gpu->mmio = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(gpu->mmio))
 		return PTR_ERR(gpu->mmio);