iio: core: fix ptr_ret.cocci warnings

Author: Fengguang Wu <fengguang.wu@intel.com>

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

Signed-off-by: Fengguang Wu 
Cc: Joel Becker 
Cc: Lars-Peter Clausen 
Cc: Christoph Hellwig 
Cc: Hartmut Knaack 
Cc: Octavian Purdila 
Cc: Paul Bolle 
Cc: Adriana Reus 
Cc: Daniel Baluta 
Cc: Cristina Opriceana 
Cc: Peter Meerwald 
Cc: Alexander Viro 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

---
 drivers/iio/industrialio-sw-trigger.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)
 
diff --git a/drivers/iio/industrialio-sw-trigger.c b/drivers/iio/industrialio-sw-trigger.c
index 311f9fe..8d24fb1 100644
--- a/drivers/iio/industrialio-sw-trigger.c
+++ b/drivers/iio/industrialio-sw-trigger.c
@@ -167,9 +167,7 @@ static int __init iio_sw_trigger_init(void)
 		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);

iio: core: fix ptr_ret.cocci warnings

qlambert

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