mtd: maps: physmap: Use devm_ioremap_resource()

Use devm_ioremap_resource() to replace the devm_request_mem_region() +
devm_ioremap() combination.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>

drivers/mtd/maps/physmap.c

@@ -129,17 +129,15 @@ static int physmap_flash_probe(struct platform_device *dev)
 		if (!res)
 			break;
 
-		dev_notice(&dev->dev, "physmap platform flash device: %pR\n",
-			   res);
-
-		if (!devm_request_mem_region(&dev->dev, res->start,
-					     resource_size(res),
-					     dev_name(&dev->dev))) {
-			dev_err(&dev->dev, "Could not reserve memory region\n");
-			err = -ENOMEM;
+		info->maps[i].virt = devm_ioremap_resource(&dev->dev, res);
+		if (IS_ERR(info->maps[i].virt)) {
+			err = PTR_ERR(info->maps[i].virt);
 			goto err_out;
 		}
 
+		dev_notice(&dev->dev, "physmap platform flash device: %pR\n",
+			   res);
+
 		info->maps[i].name = dev_name(&dev->dev);
 		info->maps[i].phys = res->start;
 		info->maps[i].size = resource_size(res);
@@ -148,15 +146,6 @@ static int physmap_flash_probe(struct platform_device *dev)
 		info->maps[i].pfow_base = physmap_data->pfow_base;
 		info->maps[i].map_priv_1 = (unsigned long)dev;
 
-		info->maps[i].virt = devm_ioremap(&dev->dev,
-						  info->maps[i].phys,
-						  info->maps[i].size);
-		if (info->maps[i].virt == NULL) {
-			dev_err(&dev->dev, "Failed to ioremap flash region\n");
-			err = -EIO;
-			goto err_out;
-		}
-
 		simple_map_init(&info->maps[i]);
 
 		probe_type = rom_probe_types;