[PATCH v2] iio: trigger: fix memory leak in viio_trigger_alloc()

[Ashwin Gundarapu]

From: Ashwin Gundarapu <linuxuser509@xxxxxxxxxxx>
Date: Fri, 22 May 2026 17:11:00 +0530
Subject: [PATCH] iio: trigger: fix memory leak in viio_trigger_alloc()

Separate error paths for before/after device_initialize().

The free_trig label was used for both early errors (before
device_initialize) and late errors (after device_initialize).

Replace the unified kfree() with:
- kfree() for early errors (free_trig)
- put_device() for late errors (free_descs)

This prevents put_device() on an uninitialized device and
ensures proper reference counting cleanup.

Signed-off-by: Ashwin Gundarapu <linuxuser509@xxxxxxxxxxx>
---
 drivers/iio/industrialio-trigger.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c
index 9c72e7ae996c..39208c65e6c1 100644
--- a/drivers/iio/industrialio-trigger.c
+++ b/drivers/iio/industrialio-trigger.c
@@ -597,9 +597,11 @@ struct iio_trigger *viio_trigger_alloc(struct device *parent,
 
 free_descs:
 	irq_free_descs(trig->subirq_base, CONFIG_IIO_CONSUMERS_PER_TRIGGER);
-free_trig:
 	put_device(&trig->dev);
 	return NULL;
+free_trig:
+	kfree(trig);
+	return NULL;
 }
 
 /**
--
2.43.0