net/rocker: Remove unreachable return instruction

The "return 0" instruction follows other return instruction
and it makes it impossible to execute, hence remove it.

Fixes: 00fc0c51 ("rocker: Change world_ops API and implementation to be switchdev independant")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/rocker/rocker_ofdpa.c

@@ -789,7 +789,6 @@ static int ofdpa_flow_tbl_add(struct ofdpa_port *ofdpa_port,
 			       ofdpa_flags_nowait(flags),
 			       ofdpa_cmd_flow_tbl_add,
 			       found, NULL, NULL);
-	return 0;
 }
 
 static int ofdpa_flow_tbl_del(struct ofdpa_port *ofdpa_port,