tun: do not block BH again in tun_flow_cleanup()

tun_flow_cleanup() being a timer callback, it is already
running in BH context.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2017-10-20 11:29:55 -07:00 • committed by David S. Miller
commit 7dbfb4ef77