rocker: fix an error code

We intended to return PTR_ERR() here instead of 1.

Fixes: 1f9993f6 ('rocker: fix a neigh entry leak issue')
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Acked-by: NJiri Pirko <jiri@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/rocker/rocker_ofdpa.c

@@ -1449,7 +1449,7 @@ static int ofdpa_port_ipv4_resolve(struct ofdpa_port *ofdpa_port,
 	if (!n) {
 		n = neigh_create(&arp_tbl, &ip_addr, dev);
 		if (IS_ERR(n))
-			return IS_ERR(n);
+			return PTR_ERR(n);
 	}
 
 	/* If the neigh is already resolved, then go ahead and