nfs41: nfs4_get_lease_time will never session reset

Make this clear by calling rpc_restart-call.
Prepare for nfs4_restart_rpc() to free slots.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index ff1c734..a23110d 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -4408,7 +4408,7 @@
 		dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status);
 		rpc_delay(task, NFS4_POLL_RETRY_MIN);
 		task->tk_status = 0;
-		nfs4_restart_rpc(task, data->clp);
+		rpc_restart_call(task);
 		return;
 	}
 	nfs41_sequence_free_slot(data->clp, &data->res->lr_seq_res);