svcrpc: move some initialization to common code

Minor cleanup, no change in behavior.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/net/sunrpc/svcauth.c b/net/sunrpc/svcauth.c
index 79c0f34..69841db 100644
--- a/net/sunrpc/svcauth.c
+++ b/net/sunrpc/svcauth.c
@@ -55,6 +55,7 @@
 	spin_unlock(&authtab_lock);
 
 	rqstp->rq_auth_slack = 0;
+	init_svc_cred(&rqstp->rq_cred);
 
 	rqstp->rq_authop = aops;
 	return aops->accept(rqstp, authp);
@@ -63,6 +64,7 @@
 
 int svc_set_client(struct svc_rqst *rqstp)
 {
+	rqstp->rq_client = NULL;
 	return rqstp->rq_authop->set_client(rqstp);
 }
 EXPORT_SYMBOL_GPL(svc_set_client);