net/mlx5e: Do not fail PSP init on missing caps

PSP support requires a set of cap bits to be set, otherwise an init
error is logged.

But logging an error when PSP cannot be initialized is too much, and not
in line with other features. If a feature cannot be initialized because
it is not supported, that's not an error. An error should only be
printed when the feature cannot be initialized because of an actual
error.

Fixes: 89ee2d9 ("net/mlx5e: Support PSP offload functionality")
Signed-off-by: Cosmin Ratiu <cratiu@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1759652999-858513-4-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

Author: Cosmin Ratiu

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

@@ -893,27 +893,27 @@ int mlx5e_psp_init(struct mlx5e_priv *priv)
 
 	if (!mlx5_is_psp_device(mdev)) {
 		mlx5_core_dbg(mdev, "PSP offload not supported\n");
-		return -EOPNOTSUPP;
+		return 0;
 	}
 
 	if (!MLX5_CAP_ETH(mdev, swp)) {
 		mlx5_core_dbg(mdev, "SWP not supported\n");
-		return -EOPNOTSUPP;
+		return 0;
 	}
 
 	if (!MLX5_CAP_ETH(mdev, swp_csum)) {
 		mlx5_core_dbg(mdev, "SWP checksum not supported\n");
-		return -EOPNOTSUPP;
+		return 0;
 	}
 
 	if (!MLX5_CAP_ETH(mdev, swp_csum_l4_partial)) {
 		mlx5_core_dbg(mdev, "SWP L4 partial checksum not supported\n");
-		return -EOPNOTSUPP;
+		return 0;
 	}
 
 	if (!MLX5_CAP_ETH(mdev, swp_lso)) {
 		mlx5_core_dbg(mdev, "PSP LSO not supported\n");
-		return -EOPNOTSUPP;
+		return 0;
 	}
 
 	psp = kzalloc(sizeof(*psp), GFP_KERNEL);