net: fsl/fman: fix phydev reference leak

Make sure to drop the reference taken by of_phy_find_device() during
initialisation when later freeing the struct fman_mac.

Fixes: 57ba4c9b56d8 ("fsl/fman: Add FMan MAC support")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/freescale/fman/fman_memac.c

@@ -1107,6 +1107,9 @@ int memac_free(struct fman_mac *memac)
 {
 	free_init_resources(memac);
 
+	if (memac->pcsphy)
+		put_device(&memac->pcsphy->mdio.dev);
+
 	kfree(memac->memac_drv_param);
 	kfree(memac);