net/mlx5: Lag, fix a potential Oops with mlx5_lag_create_definer()

There is a minus character missing from ERR_PTR(ENOMEM) so if this
allocation fails it will lead to an Oops in the caller.

Fixes: dc48516 ("net/mlx5: Lag, add support to create definers for LAG")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Author: Dan Carpenter

drivers/net/ethernet/mellanox/mlx5/core/lag/port_sel.c

@@ -289,7 +289,7 @@ mlx5_lag_create_definer(struct mlx5_lag *ldev, enum netdev_lag_hash hash,
 
 	lag_definer = kzalloc(sizeof(*lag_definer), GFP_KERNEL);
 	if (!lag_definer)
-		return ERR_PTR(ENOMEM);
+		return ERR_PTR(-ENOMEM);
 
 	match_definer_mask = kvzalloc(MLX5_FLD_SZ_BYTES(match_definer,
 							match_mask),