net/mlx5e: Set proper IPsec source port in L4 selector

Fix typo in setup_fte_upper_proto_match() where destination UDP port
was used instead of source port.

Fixes: a7385187 ("net/mlx5e: IPsec, support upper protocol selector field offload")
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/ffc024a4d192113103f392b0502688366ca88c1f.1690803944.git.leonro@nvidia.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c

@@ -808,9 +808,9 @@ static void setup_fte_upper_proto_match(struct mlx5_flow_spec *spec, struct upsp
 	}
 
 	if (upspec->sport) {
-		MLX5_SET(fte_match_set_lyr_2_4, spec->match_criteria, udp_dport,
+		MLX5_SET(fte_match_set_lyr_2_4, spec->match_criteria, udp_sport,
 			 upspec->sport_mask);
-		MLX5_SET(fte_match_set_lyr_2_4, spec->match_value, udp_dport, upspec->sport);
+		MLX5_SET(fte_match_set_lyr_2_4, spec->match_value, udp_sport, upspec->sport);
 	}
 }