nfsd: no need to unhash_stid before free

idr_remove is about to be called before kmem_cache_free so unhashing it
is redundant

Signed-off-by: Benny Halevy <bhalevy@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

fs/nfsd/nfs4state.c

@@ -672,7 +672,6 @@ static void unhash_open_stateid(struct nfs4_ol_stateid *stp)
 static void release_open_stateid(struct nfs4_ol_stateid *stp)
 {
 	unhash_open_stateid(stp);
-	unhash_stid(&stp->st_stid);
 	free_generic_stateid(stp);
 }
 
@@ -694,7 +693,6 @@ static void release_last_closed_stateid(struct nfs4_openowner *oo)
 	struct nfs4_ol_stateid *s = oo->oo_last_closed_stid;
 
 	if (s) {
-		unhash_stid(&s->st_stid);
 		free_generic_stateid(s);
 		oo->oo_last_closed_stid = NULL;
 	}
@@ -3998,10 +3996,9 @@ nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 
 	nfsd4_close_open_stateid(stp);
 
-	if (cstate->minorversion) {
-		unhash_stid(&stp->st_stid);
+	if (cstate->minorversion)
 		free_generic_stateid(stp);
-	} else
+	else
 		oo->oo_last_closed_stid = stp;
 
 	if (list_empty(&oo->oo_owner.so_stateids)) {