mfd: sun4i-gpadc: Use devm_platform_get_and_ioremap_resource()

Convert platform_get_resource(), devm_ioremap_resource() to a single
call to devm_platform_get_and_ioremap_resource(), as this is exactly
what this function does.
Signed-off-by: Ye Xingchen <ye.xingchen@zte.com.cn>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/202302081736500534579@zte.com.cn

drivers/mfd/sun4i-gpadc.c

@@ -93,7 +93,6 @@ MODULE_DEVICE_TABLE(of, sun4i_gpadc_of_match);
 static int sun4i_gpadc_probe(struct platform_device *pdev)
 {
 	struct sun4i_gpadc_dev *dev;
-	struct resource *mem;
 	const struct of_device_id *of_id;
 	const struct mfd_cell *cells;
 	unsigned int irq, size;
@@ -124,8 +123,7 @@ static int sun4i_gpadc_probe(struct platform_device *pdev)
 	if (!dev)
 		return -ENOMEM;
 
-	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	dev->base = devm_ioremap_resource(&pdev->dev, mem);
+	dev->base = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);
 	if (IS_ERR(dev->base))
 		return PTR_ERR(dev->base);