net/handshake: handshake_genl_notify() shouldn't ignore @flags

Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Fixes: 3b3009e ("net/handshake: Create a NETLINK service for handling handshake requests")
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: chucklever

net/handshake/netlink.c

@@ -48,7 +48,7 @@ int handshake_genl_notify(struct net *net, const struct handshake_proto *proto,
 				proto->hp_handler_class))
 		return -ESRCH;
 
-	msg = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
+	msg = genlmsg_new(GENLMSG_DEFAULT_SIZE, flags);
 	if (!msg)
 		return -ENOMEM;