NFSv4: Fix two unbalanced put_rpccred() issues.

Commits 29fba38b (nfs41: lease renewal) and fc01cea9 (nfs41: sequence
operation) introduce a couple of put_rpccred() calls on credentials for
which there is no corresponding get_rpccred().

See http://bugzilla.kernel.org/show_bug.cgi?id=14249

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/nfs4proc.c

@@ -3065,9 +3065,6 @@ static void nfs4_renew_done(struct rpc_task *task, void *data)
 	if (time_before(clp->cl_last_renewal,timestamp))
 		clp->cl_last_renewal = timestamp;
 	spin_unlock(&clp->cl_lock);
-	dprintk("%s calling put_rpccred on rpc_cred %p\n", __func__,
-				task->tk_msg.rpc_cred);
-	put_rpccred(task->tk_msg.rpc_cred);
 }
 
 static const struct rpc_call_ops nfs4_renew_ops = {
@@ -4882,7 +4879,6 @@ void nfs41_sequence_call_done(struct rpc_task *task, void *data)
 	nfs41_sequence_free_slot(clp, task->tk_msg.rpc_resp);
 	dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred);
 
-	put_rpccred(task->tk_msg.rpc_cred);
 	kfree(task->tk_msg.rpc_argp);
 	kfree(task->tk_msg.rpc_resp);