can: xilinx_can: use devm_platform_ioremap_resource() to simplify code

Use devm_platform_ioremap_resource() to simplify the code a bit.
This is detected by coccinelle.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

drivers/net/can/xilinx_can.c

@@ -1657,7 +1657,6 @@ MODULE_DEVICE_TABLE(of, xcan_of_match);
  */
 static int xcan_probe(struct platform_device *pdev)
 {
-	struct resource *res; /* IO mem resources */
 	struct net_device *ndev;
 	struct xcan_priv *priv;
 	const struct of_device_id *of_id;
@@ -1669,8 +1668,7 @@ static int xcan_probe(struct platform_device *pdev)
 	const char *hw_tx_max_property;
 
 	/* Get the virtual base address for the device */
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	addr = devm_ioremap_resource(&pdev->dev, res);
+	addr = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(addr)) {
 		ret = PTR_ERR(addr);
 		goto err;