net: mv643xx_eth: Simplify with scoped for each OF child loop

Use scoped for_each_available_child_of_node_scoped() when iterating
over device nodes to make code a bit simpler.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

drivers/net/ethernet/marvell/mv643xx_eth.c

@@ -2802,7 +2802,7 @@ static int mv643xx_eth_shared_of_add_port(struct platform_device *pdev,
 static int mv643xx_eth_shared_of_probe(struct platform_device *pdev)
 {
 	struct mv643xx_eth_shared_platform_data *pd;
-	struct device_node *pnp, *np = pdev->dev.of_node;
+	struct device_node *np = pdev->dev.of_node;
 	int ret;
 
 	/* bail out if not registered from DT */
@@ -2816,10 +2816,9 @@ static int mv643xx_eth_shared_of_probe(struct platform_device *pdev)
 
 	mv643xx_eth_property(np, "tx-checksum-limit", pd->tx_csum_limit);
 
-	for_each_available_child_of_node(np, pnp) {
+	for_each_available_child_of_node_scoped(np, pnp) {
 		ret = mv643xx_eth_shared_of_add_port(pdev, pnp);
 		if (ret) {
-			of_node_put(pnp);
 			mv643xx_eth_shared_of_remove();
 			return ret;
 		}