pkt_sched: Grab correct lock in notify_and_destroy().

From: Jarek Poplawski <jarkao2@gmail.com>

When we are destroying non-root qdiscs, we need to lock
the root of the qdisc tree not the the qdisc itself.

Signed-off-by: David S. Miller <davem@davemloft.net>
1 file changed