net/mlx5e: IPsec, Avoid unreachable return

Simple code improvement, move default return operation under
the #else block.
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Huy Nguyen <huyn@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h

@@ -144,9 +144,9 @@ static inline bool mlx5e_accel_tx_is_ipsec_flow(struct mlx5e_accel_tx_state *sta
 {
 #ifdef CONFIG_MLX5_EN_IPSEC
 	return mlx5e_ipsec_is_tx_flow(&state->ipsec);
-#endif
-
+#else
 	return false;
+#endif
 }
 
 static inline unsigned int mlx5e_accel_tx_ids_len(struct mlx5e_txqsq *sq,