svcrpc: move some initialization to common code

Minor cleanup, no change in behavior.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

net/sunrpc/svcauth.c

@@ -55,6 +55,7 @@ svc_authenticate(struct svc_rqst *rqstp, __be32 *authp)
 	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 @@ EXPORT_SYMBOL_GPL(svc_authenticate);
 
 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);

net/sunrpc/svcauth_unix.c

@@ -728,10 +728,6 @@ svcauth_null_accept(struct svc_rqst *rqstp, __be32 *authp)
 	struct kvec	*resv = &rqstp->rq_res.head[0];
 	struct svc_cred	*cred = &rqstp->rq_cred;
 
-	cred->cr_group_info = NULL;
-	cred->cr_principal = NULL;
-	rqstp->rq_client = NULL;
-
 	if (argv->iov_len < 3*4)
 		return SVC_GARBAGE;
 
@@ -794,10 +790,6 @@ svcauth_unix_accept(struct svc_rqst *rqstp, __be32 *authp)
 	u32		slen, i;
 	int		len   = argv->iov_len;
 
-	cred->cr_group_info = NULL;
-	cred->cr_principal = NULL;
-	rqstp->rq_client = NULL;
-
 	if ((len -= 3*4) < 0)
 		return SVC_GARBAGE;