[PATCH v7 1/4] iio: backend: use __free(fwnode_handle) for automatic cleanup

[Antoniu Miclaus]

Convert __devm_iio_backend_fwnode_get() to use the __free(fwnode_handle)
cleanup attribute for the fwnode_back variable, removing the need for
manual fwnode_handle_put() calls. Move the declaration closer to its
first use, narrowing its scope.

No functional change.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxx>
Reviewed-by: Nuno Sá <nuno.sa@xxxxxxxxxx>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@xxxxxxxxxx>
---
Changes in v7:
  - No changes

 drivers/iio/industrialio-backend.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/iio/industrialio-backend.c b/drivers/iio/industrialio-backend.c
index 447b694d6d5f..58f7e1426095 100644
--- a/drivers/iio/industrialio-backend.c
+++ b/drivers/iio/industrialio-backend.c
@@ -952,7 +952,6 @@ EXPORT_SYMBOL_NS_GPL(iio_backend_data_transfer_addr, "IIO_BACKEND");
 static struct iio_backend *__devm_iio_backend_fwnode_get(struct device *dev, const char *name,
 							 struct fwnode_handle *fwnode)
 {
-	struct fwnode_handle *fwnode_back;
 	struct iio_backend *back;
 	unsigned int index;
 	int ret;
@@ -967,7 +966,8 @@ static struct iio_backend *__devm_iio_backend_fwnode_get(struct device *dev, con
 		index = 0;
 	}
 
-	fwnode_back = fwnode_find_reference(fwnode, "io-backends", index);
+	struct fwnode_handle *fwnode_back __free(fwnode_handle) =
+		fwnode_find_reference(fwnode, "io-backends", index);
 	if (IS_ERR(fwnode_back))
 		return dev_err_cast_probe(dev, fwnode_back,
 					  "Cannot get Firmware reference\n");
@@ -977,7 +977,6 @@ static struct iio_backend *__devm_iio_backend_fwnode_get(struct device *dev, con
 		if (!device_match_fwnode(back->dev, fwnode_back))
 			continue;
 
-		fwnode_handle_put(fwnode_back);
 		ret = __devm_iio_backend_get(dev, back);
 		if (ret)
 			return ERR_PTR(ret);
@@ -988,7 +987,6 @@ static struct iio_backend *__devm_iio_backend_fwnode_get(struct device *dev, con
 		return back;
 	}
 
-	fwnode_handle_put(fwnode_back);
 	return ERR_PTR(-EPROBE_DEFER);
 }
 
-- 
2.43.0