fsl/fman: double free on probe failure

"priv" is allocated with devm_kzalloc() so freeing it here with kfree()
will lead to a double free.

Fixes: 39339616 ('fsl/fman: Add FMan MAC driver')
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

@@ -961,7 +961,6 @@ static int mac_probe(struct platform_device *_of_dev)
 	of_node_put(dev_node);
 _return_dev_set_drvdata:
 	kfree(priv->fixed_link);
-	kfree(priv);
 	dev_set_drvdata(dev, NULL);
 _return:
 	return err;