net/mlx5e: IPoIB, Fix RX checksum statistics update

Update the RX checksum only if the feature is enabled.

Fixes: 9d6bd752 ("net/mlx5e: IPoIB, RX handler")
Signed-off-by: Feras Daoud <ferasda@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

drivers/net/ethernet/mellanox/mlx5/core/en_rx.c

@@ -1295,8 +1295,14 @@ static inline void mlx5i_complete_rx_cqe(struct mlx5e_rq *rq,
 
 	skb->protocol = *((__be16 *)(skb->data));
 
+	if (netdev->features & NETIF_F_RXCSUM) {
 		skb->ip_summed = CHECKSUM_COMPLETE;
 		skb->csum = csum_unfold((__force __sum16)cqe->check_sum);
+		stats->csum_complete++;
+	} else {
+		skb->ip_summed = CHECKSUM_NONE;
+		stats->csum_none++;
+	}
 
 	if (unlikely(mlx5e_rx_hw_stamp(tstamp)))
 		skb_hwtstamps(skb)->hwtstamp =
@@ -1315,7 +1321,6 @@ static inline void mlx5i_complete_rx_cqe(struct mlx5e_rq *rq,
 
 	skb->dev = netdev;
 
-	stats->csum_complete++;
 	stats->packets++;
 	stats->bytes += cqe_bcnt;
 }