phy: renesas: rcar-gen2: Fix memory leak at error paths

This patch fixes memory leak at error paths of the probe function.
In for_each_child_of_node, if the loop returns, the driver should
call of_put_node() before returns.

Reported-by: Julia Lawall <julia.lawall@lip6.fr>
Fixes: 1233f59f745b237 ("phy: Renesas R-Car Gen2 PHY driver")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

diff --git a/drivers/phy/renesas/phy-rcar-gen2.c b/drivers/phy/renesas/phy-rcar-gen2.c
index 8dc5710d9c9876195de4efc8e454afa0e2c8acaf..2926e49373017ba972fb162a4d88b34fa61d5010 100644 (file)
--- a/drivers/phy/renesas/phy-rcar-gen2.c
+++ b/drivers/phy/renesas/phy-rcar-gen2.c
@@ -391,6 +391,7 @@ static int rcar_gen2_phy_probe(struct platform_device *pdev)
                error = of_property_read_u32(np, "reg", &channel_num);
                if (error || channel_num > 2) {
                        dev_err(dev, "Invalid \"reg\" property\n");
+                       of_node_put(np);
                        return error;
                }
                channel->select_mask = select_mask[channel_num];
@@ -406,6 +407,7 @@ static int rcar_gen2_phy_probe(struct platform_device *pdev)
                                                   data->gen2_phy_ops);
                        if (IS_ERR(phy->phy)) {
                                dev_err(dev, "Failed to create PHY\n");
+                               of_node_put(np);
                                return PTR_ERR(phy->phy);
                        }
                        phy_set_drvdata(phy->phy, phy);