net/mlx5e: Add rollback on add VLAN failure

When add VLAN rule fails the active vlan bit should be cleared.

Fixes: afb736e9

 ("net/mlx5: Ethernet resource handling files")
Signed-off-by: Gal Pressman <galp@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>