net: dsa: ocelot: 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.
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Link: https://patch.msgid.link/20240820074805.680674-1-ruanjinjie@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/dsa/ocelot/felix.c

@@ -1265,9 +1265,8 @@ static int felix_parse_ports_node(struct felix *felix,
 				  phy_interface_t *port_phy_modes)
 {
 	struct device *dev = felix->ocelot.dev;
-	struct device_node *child;
 
-	for_each_available_child_of_node(ports_node, child) {
+	for_each_available_child_of_node_scoped(ports_node, child) {
 		phy_interface_t phy_mode;
 		u32 port;
 		int err;
@@ -1276,7 +1275,6 @@ static int felix_parse_ports_node(struct felix *felix,
 		if (of_property_read_u32(child, "reg", &port) < 0) {
 			dev_err(dev, "Port number not defined in device tree "
 				"(property \"reg\")\n");
-			of_node_put(child);
 			return -ENODEV;
 		}
 
@@ -1286,7 +1284,6 @@ static int felix_parse_ports_node(struct felix *felix,
 			dev_err(dev, "Failed to read phy-mode or "
 				"phy-interface-type property for port %d\n",
 				port);
-			of_node_put(child);
 			return -ENODEV;
 		}