nfsd: minor consolidation of mach_cred handling code

Minor cleanup, no change in functionality.

Signed-off-by: J. Bruce Fields <[e-mail]>

fs/nfsd/nfs4state.c

···
 	if (exid->flags & ~EXCHGID4_FLAG_MASK_A)
 		return nfserr_inval;
 
+	new = create_client(exid->clname, rqstp, &verf);
+	if (new == NULL)
+		return nfserr_jukebox;
+
 	switch (exid->spa_how) {
 	case SP4_MACH_CRED:
-		if (!svc_rqst_integrity_protected(rqstp))
-			return nfserr_inval;
+		if (!svc_rqst_integrity_protected(rqstp)) {
+			status = nfserr_inval;
+			goto out_nolock;
+		}
+		new->cl_mach_cred = true;
 	case SP4_NONE:
 		break;
 	default:				/* checked by xdr code */
···
 	case SP4_SSV:
 		return nfserr_encr_alg_unsupp;
 	}
-
-	new = create_client(exid->clname, rqstp, &verf);
-	if (new == NULL)
-		return nfserr_jukebox;
 
 	/* Cases below refer to rfc 5661 section 18.35.4: */
 	spin_lock(&nn->client_lock);
···
 			goto out;
 	}
 	new->cl_minorversion = cstate->minorversion;
-	new->cl_mach_cred = (exid->spa_how == SP4_MACH_CRED);
 
 	gen_clid(new, nn);
 	add_to_unconfirmed(new);
···
 
 out:
 	spin_unlock(&nn->client_lock);
+out_nolock:
 	if (new)
 		expire_client(new);
 	if (unconf)