nfsd4: fix alloc_init_session return type

This returns an nfs error, not -ERRNO.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index e305794..ebddcc1 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -639,9 +639,7 @@
 	return ca->maxresp_cached - NFSD_MIN_HDR_SEQ_SZ;
 }
 
-static int
-alloc_init_session(struct svc_rqst *rqstp, struct nfs4_client *clp,
-		   struct nfsd4_create_session *cses)
+static __be32 alloc_init_session(struct svc_rqst *rqstp, struct nfs4_client *clp, struct nfsd4_create_session *cses)
 {
 	struct nfsd4_session *new, tmp;
 	struct nfsd4_slot *sp;