net: dpaa: Fix uninitialized variable in dpaa_stop()

The return value is not initialized on the success path.

Fixes: 901bdff ("net: fman: Change return type of disable to void")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Acked-by: Madalin Bucur <madalin.bucur@oss.nxp.com>
Reviewed-by: Sean Anderson <sean.anderson@seco.com>
Link: https://lore.kernel.org/r/8c9dc377-8495-495f-a4e5-4d2d0ee12f0c@kili.mountain
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: Dan Carpenter

drivers/net/ethernet/freescale/dpaa/dpaa_eth.c

@@ -299,7 +299,8 @@ static int dpaa_stop(struct net_device *net_dev)
 {
 	struct mac_device *mac_dev;
 	struct dpaa_priv *priv;
-	int i, err, error;
+	int i, error;
+	int err = 0;
 
 	priv = netdev_priv(net_dev);
 	mac_dev = priv->mac_dev;