[IPSEC]: Make callers of xfrm_lookup to use XFRM_LOOKUP_WAIT

This patch converts all callers of xfrm_lookup that used an
explicit value of 1 to indiciate blocking to use the new flag
XFRM_LOOKUP_WAIT.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index b576f8c..1b70ffd 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -2536,7 +2536,8 @@
 			flp->fl4_src = (*rp)->rt_src;
 		if (!flp->fl4_dst)
 			flp->fl4_dst = (*rp)->rt_dst;
-		err = __xfrm_lookup((struct dst_entry **)rp, flp, sk, flags);
+		err = __xfrm_lookup((struct dst_entry **)rp, flp, sk,
+				    flags ? XFRM_LOOKUP_WAIT : 0);
 		if (err == -EREMOTE)
 			err = ipv4_dst_blackhole(rp, flp, sk);