mtd: rawnand: txx9ndfm: 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/20210901074237.9533-1-caihuoqing@baidu.com

drivers/mtd/nand/raw/txx9ndfmc.c

@@ -284,13 +284,11 @@ static int __init txx9ndfmc_probe(struct platform_device *dev)
 	int i;
 	struct txx9ndfmc_drvdata *drvdata;
 	unsigned long gbusclk = plat->gbus_clock;
-	struct resource *res;
 
 	drvdata = devm_kzalloc(&dev->dev, sizeof(*drvdata), GFP_KERNEL);
 	if (!drvdata)
 		return -ENOMEM;
-	res = platform_get_resource(dev, IORESOURCE_MEM, 0);
-	drvdata->base = devm_ioremap_resource(&dev->dev, res);
+	drvdata->base = devm_platform_ioremap_resource(dev, 0);
 	if (IS_ERR(drvdata->base))
 		return PTR_ERR(drvdata->base);