mdio-sun4i: Fix a memory leak

If the probing of the regulator is deferred, the memory allocated by
'mdiobus_alloc_size()' will be leaking.
It should be freed before the next call to 'sun4i_mdio_probe()' which will
reallocate it.

Fixes: 4bdcb1dd9feb ("net: Add MDIO bus driver for the Allwinner EMAC")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/net/phy/mdio-sun4i.c b/drivers/net/phy/mdio-sun4i.c
index 135296508a7e..6425ce04d3f9 100644
--- a/drivers/net/phy/mdio-sun4i.c
+++ b/drivers/net/phy/mdio-sun4i.c
@@ -118,8 +118,10 @@ static int sun4i_mdio_probe(struct platform_device *pdev)
 
         data->regulator = devm_regulator_get(&pdev->dev, "phy");
         if (IS_ERR(data->regulator)) {
-                if (PTR_ERR(data->regulator) == -EPROBE_DEFER)
-                        return -EPROBE_DEFER;
+                if (PTR_ERR(data->regulator) == -EPROBE_DEFER) {
+                        ret = -EPROBE_DEFER;
+                        goto err_out_free_mdiobus;
+                }
 
                 dev_info(&pdev->dev, "no regulator found\n");
                 data->regulator = NULL;