Merge branch 'net-sched-couple-of-chain-fixes'

Jiri Pirko says:

====================
net: sched: couple of chain fixes

Jiri Pirko (2):
  net: sched: fix use after free when tcf_chain_destroy is called
    multiple times
  net: sched: don't do tcf_chain_flush from tcf_chain_destroy
====================

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