net: mscc: ocelot: add missing of_node_put after calling of_get_child_by_name

of_node_put needs to be called when the device node which is got
from of_get_child_by_name finished using.
In both cases of success and failure, we need to release 'ports',
so clean up the code using goto.

fixes: a556c76adc05 ("net: mscc: Add initial Ocelot switch support")
Signed-off-by: Wen Yang <wenyang@linux.alibaba.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Microchip Linux Driver Support <UNGLinuxDriver@microchip.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mscc/ocelot_board.c b/drivers/net/ethernet/mscc/ocelot_board.c
index b063eb7..aac1151 100644 (file)
--- a/drivers/net/ethernet/mscc/ocelot_board.c
+++ b/drivers/net/ethernet/mscc/ocelot_board.c
@@ -388,13 +388,14 @@ static int mscc_ocelot_probe(struct platform_device *pdev)
                        continue;
 
                phy = of_phy_find_device(phy_node);
+               of_node_put(phy_node);
                if (!phy)
                        continue;
 
                err = ocelot_probe_port(ocelot, port, regs, phy);
                if (err) {
                        of_node_put(portnp);
-                       return err;
+                       goto out_put_ports;
                }
 
                phy_mode = of_get_phy_mode(portnp);
@@ -422,7 +423,8 @@ static int mscc_ocelot_probe(struct platform_device *pdev)
                                "invalid phy mode for port%d, (Q)SGMII only\n",
                                port);
                        of_node_put(portnp);
-                       return -EINVAL;
+                       err = -EINVAL;
+                       goto out_put_ports;
                }
 
                serdes = devm_of_phy_get(ocelot->dev, portnp, NULL);
@@ -435,7 +437,8 @@ static int mscc_ocelot_probe(struct platform_device *pdev)
                                        "missing SerDes phys for port%d\n",
                                        port);
 
-                       goto err_probe_ports;
+                       of_node_put(portnp);
+                       goto out_put_ports;
                }
 
                ocelot->ports[port]->serdes = serdes;
@@ -447,9 +450,8 @@ static int mscc_ocelot_probe(struct platform_device *pdev)
 
        dev_info(&pdev->dev, "Ocelot switch probed\n");
 
-       return 0;
-
-err_probe_ports:
+out_put_ports:
+       of_node_put(ports);
        return err;
 }