[PATCH] fix ptr_ret.cocci warnings

[kbuild test robot <fengguang.wu@intel.com>]

fs/nfs/nfs42proc.c:191:1-3: WARNING: PTR_ERR_OR_ZERO can be used


 Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR

Generated by: scripts/coccinelle/api/ptr_ret.cocci

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
---

 nfs42proc.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- a/fs/nfs/nfs42proc.c
+++ b/fs/nfs/nfs42proc.c
@@ -188,7 +188,5 @@ int nfs42_proc_layoutstats_generic(struc
 
 	nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0);
 	task = rpc_run_task(&task_setup);
-	if (IS_ERR(task))
-		return PTR_ERR(task);
-	return 0;
+	return PTR_ERR_OR_ZERO(task);
 }