net/mlx5e: Remove dependency in IPsec initialization flows

Currently, IPsec feature is disabled because mlx5e_build_nic_netdev
is required to be called after mlx5e_ipsec_init. This requirement is
invalid as mlx5e_build_nic_netdev and mlx5e_ipsec_init initialize
independent resources.

Remove ipsec pointer check in mlx5e_build_nic_netdev so that the
two functions can be called at any order.

Fixes: 547eede070eb ("net/mlx5e: IPSec, Innova IPSec offload infrastructure")
Signed-off-by: Huy Nguyen <[e-mail]>
Reviewed-by: Raed Salem <[e-mail]>
Signed-off-by: Saeed Mahameed <[e-mail]>

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

···
 	struct mlx5_core_dev *mdev = priv->mdev;
 	struct net_device *netdev = priv->netdev;
 
-	if (!priv->ipsec)
-		return;
-
 	if (!(mlx5_accel_ipsec_device_caps(mdev) & MLX5_ACCEL_IPSEC_CAP_ESP) ||
 	    !MLX5_CAP_ETH(mdev, swp)) {
 		mlx5_core_dbg(mdev, "mlx5e: ESP and SWP offload not supported\n");