[PATCH] iio: core: fix ptr_ret.cocci warnings

[kbuild test robot]

drivers/iio/industrialio-sw-trigger.c:169:1-3: 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

CC: Daniel Baluta <daniel.baluta@xxxxxxxxx>
Signed-off-by: Fengguang Wu <fengguang.wu@xxxxxxxxx>
---

 industrialio-sw-trigger.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- a/drivers/iio/industrialio-sw-trigger.c
+++ b/drivers/iio/industrialio-sw-trigger.c
@@ -166,9 +166,7 @@ static int __init iio_sw_trigger_init(vo
 		configfs_register_default_group(&iio_configfs_subsys.su_group,
 						"triggers",
 						&iio_triggers_group_type);
-	if (IS_ERR(iio_triggers_group))
-		return PTR_ERR(iio_triggers_group);
-	return 0;
+	return PTR_ERR_OR_ZERO(iio_triggers_group);
 }
 module_init(iio_sw_trigger_init);
 
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