diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c
index 5cc3d53bbf66..907d4005a1cf 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -607,6 +607,7 @@ static int sfp_i2c_mdiobus_create(struct sfp *sfp)
 static void sfp_i2c_mdiobus_destroy(struct sfp *sfp)
 {
 	mdiobus_unregister(sfp->i2c_mii);
+	mdiobus_free(sfp->i2c_mii);
 	sfp->i2c_mii = NULL;
 }