net: dsa: sja1105: sja1105_main: Add of_node_put()

Each iteration of for_each_child_of_node puts the previous node, but in
the case of a return from the middle of the loop, there is no put, thus
causing a memory leak. Hence add an of_node_put before the return.
Issue found with Coccinelle.
Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/dsa/sja1105/sja1105_main.c

@@ -625,6 +625,7 @@ static int sja1105_parse_ports_node(struct sja1105_private *priv,
 		if (of_property_read_u32(child, "reg", &index) < 0) {
 			dev_err(dev, "Port number not defined in device tree "
 				"(property \"reg\")\n");
+			of_node_put(child);
 			return -ENODEV;
 		}
 
@@ -634,6 +635,7 @@ static int sja1105_parse_ports_node(struct sja1105_private *priv,
 			dev_err(dev, "Failed to read phy-mode or "
 				"phy-interface-type property for port %d\n",
 				index);
+			of_node_put(child);
 			return -ENODEV;
 		}
 		ports[index].phy_mode = phy_mode;
@@ -643,6 +645,7 @@ static int sja1105_parse_ports_node(struct sja1105_private *priv,
 			if (!of_phy_is_fixed_link(child)) {
 				dev_err(dev, "phy-handle or fixed-link "
 					"properties missing!\n");
+				of_node_put(child);
 				return -ENODEV;
 			}
 			/* phy-handle is missing, but fixed-link isn't.