net: qlcnic: Deletion of unnecessary memset

There is no need to memset memory allocated with vzalloc.
Signed-off-by: NChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: NShahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c

@@ -2403,7 +2403,6 @@ int qlcnic_alloc_tx_rings(struct qlcnic_adapter *adapter,
 			qlcnic_free_tx_rings(adapter);
 			return -ENOMEM;
 		}
-		memset(cmd_buf_arr, 0, TX_BUFF_RINGSIZE(tx_ring));
 		tx_ring->cmd_buf_arr = cmd_buf_arr;
 		spin_lock_init(&tx_ring->tx_clean_lock);
 	}