media: rc: mtk-cir: 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/rc/mtk-cir.c

···
 {
 	struct device *dev = &pdev->dev;
 	struct device_node *dn = dev->of_node;
-	struct resource *res;
 	struct mtk_ir *ir;
 	u32 val;
 	int ret = 0;
···
 		ir->bus = ir->clk;
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	ir->base = devm_ioremap_resource(dev, res);
+	ir->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(ir->base))
 		return PTR_ERR(ir->base);