tun: avoid extra timer schedule in tun_flow_cleanup()

If tun_flow_cleanup() deleted all flows, no need to
arm the timer again. It will be armed next time
tun_flow_update() is called.

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 11:29:56 -07:00 • committed by David S. Miller
commit 81d98fa4df