mtd: rawnand: mtk_ecc: 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 <caihuoqing@baidu.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210901074153.9233-1-caihuoqing@baidu.com

drivers/mtd/nand/raw/mtk_ecc.c

@@ -495,7 +495,6 @@ static int mtk_ecc_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct mtk_ecc *ecc;
-	struct resource *res;
 	u32 max_eccdata_size;
 	int irq, ret;
 
@@ -513,8 +512,7 @@ static int mtk_ecc_probe(struct platform_device *pdev)
 	if (!ecc->eccdata)
 		return -ENOMEM;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	ecc->regs = devm_ioremap_resource(dev, res);
+	ecc->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(ecc->regs))
 		return PTR_ERR(ecc->regs);