crypto: af_alg - Allow af_af_alg_release_parent to be called on nokey path

commit 6a935170a980024dd29199e9dbb5c4da4767a1b9 upstream.

This patch allows af_alg_release_parent to be called even for
nokey sockets.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --cc crypto/af_alg.c
Simple merge

diff --cc include/crypto/if_alg.h
Simple merge