nfsd: correctly decrement odstate refcount in error path

alloc_init_deleg() both allocates an nfs4_delegation, and
bumps the refcount on odstate. So after this point, we need to
put_clnt_odstate() and nfs4_put_stid() to not leave the odstate
refcount inappropriately bumped.
Signed-off-by: NAndrew Elble <aweits@rit.edu>
Reviewed-by: NJeff Layton <jlayton@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: NJ. Bruce Fields <bfields@redhat.com>

fs/nfsd/nfs4state.c

@@ -4398,7 +4398,7 @@ nfs4_set_delegation(struct nfs4_client *clp, struct svc_fh *fh,
 
 	fl = nfs4_alloc_init_lease(dp, NFS4_OPEN_DELEGATE_READ);
 	if (!fl)
-		goto out_stid;
+		goto out_clnt_odstate;
 
 	status = vfs_setlease(fp->fi_deleg_file, fl->fl_type, &fl, NULL);
 	if (fl)
@@ -4423,7 +4423,6 @@ nfs4_set_delegation(struct nfs4_client *clp, struct svc_fh *fh,
 	vfs_setlease(fp->fi_deleg_file, F_UNLCK, NULL, (void **)&dp);
 out_clnt_odstate:
 	put_clnt_odstate(dp->dl_clnt_odstate);
-out_stid:
 	nfs4_put_stid(&dp->dl_stid);
 out_delegees:
 	put_deleg_file(fp);