net/mlx4_en: tx_info->ts_requested was not cleared

Properly clear tx_info->ts_requested
Signed-off-by: NEric Dumazet <edumazet@google.com>
Signed-off-by: NAmir Vadai <amirv@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlx4/en_tx.c

@@ -837,6 +837,7 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
 	 * For timestamping add flag to skb_shinfo and
 	 * set flag for further reference
 	 */
+	tx_info->ts_requested = 0;
 	if (unlikely(ring->hwtstamp_tx_type == HWTSTAMP_TX_ON &&
 		     shinfo->tx_flags & SKBTX_HW_TSTAMP)) {
 		shinfo->tx_flags |= SKBTX_IN_PROGRESS;