[PATCH] iio/scmi: check if dev is null pointer

[Jiasheng Jiang]

The parameter 'dev' of scmi_iio_dev_probe() isn't been
checked before used, including when scmi_iio_dev_probe() is called.
Therefore, it might be better to check, just in case.

Fixes: 25cbdd4 ("iio/scmi: Port driver to the new scmi_sensor_proto_ops interface")
Signed-off-by: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
---
 drivers/iio/common/scmi_sensors/scmi_iio.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/iio/common/scmi_sensors/scmi_iio.c b/drivers/iio/common/scmi_sensors/scmi_iio.c
index 141e8aa..d3ff985 100644
--- a/drivers/iio/common/scmi_sensors/scmi_iio.c
+++ b/drivers/iio/common/scmi_sensors/scmi_iio.c
@@ -592,6 +592,9 @@ static int scmi_iio_dev_probe(struct scmi_device *sdev)
 
 	if (!handle)
 		return -ENODEV;
+
+	if (!dev)
+		return -ENODEV;
 
 	sensor_ops = handle->devm_protocol_get(sdev, SCMI_PROTOCOL_SENSOR, &ph);
 	if (IS_ERR(sensor_ops)) {
-- 
2.7.4