media: mx2_emmaprp: Make use of the helper function devm_platform_ioremap_resource()

Use the devm_platform_ioremap_resource() helper instead of
calling platform_get_resource() and devm_ioremap_resource()
separately

Signed-off-by: Cai Huoqing <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/platform/mx2_emmaprp.c

···
 {
 	struct emmaprp_dev *pcdev;
 	struct video_device *vfd;
-	struct resource *res;
 	int irq, ret;
 
 	pcdev = devm_kzalloc(&pdev->dev, sizeof(*pcdev), GFP_KERNEL);
···
 	if (IS_ERR(pcdev->clk_emma_ahb))
 		return PTR_ERR(pcdev->clk_emma_ahb);
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	pcdev->base_emma = devm_ioremap_resource(&pdev->dev, res);
+	pcdev->base_emma = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(pcdev->base_emma))
 		return PTR_ERR(pcdev->base_emma);