af_key: remove a duplicated skb_orphan()

skb_set_owner_r() will call skb_orphan(), I don't
see any reason to call it twice.

Issue: SEC-1760
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Change-Id: I1a798ddd6ae3886910efdb1d40f2b78a053217c3
(cherry picked from commit cdfa1fe5c0d4f2815acfe8cd7730a0b3d8d0a3e9)
1 file changed