net/sched: cls_flower: Use mask for addr_type

When addr_type is set, mask should also be set.

Fixes: 66530bdf ('sched,cls_flower: set key address type when present')
Fixes: bc3103f1

 ('net/sched: cls_flower: Classify packet in ip tunnels')
Signed-off-by: Paul Blakey <paulb@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>