iio: imu: adis16400: fix memory leak

In adis_update_scan_mode_burst, if adis->buffer allocation fails release
the adis->xfer.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/imu/adis_buffer.c b/drivers/iio/imu/adis_buffer.c
index f446ff4..4998a89 100644 (file)
--- a/drivers/iio/imu/adis_buffer.c
+++ b/drivers/iio/imu/adis_buffer.c
@@ -35,8 +35,11 @@ static int adis_update_scan_mode_burst(struct iio_dev *indio_dev,
                return -ENOMEM;
 
        adis->buffer = kzalloc(burst_length + sizeof(u16), GFP_KERNEL);
-       if (!adis->buffer)
+       if (!adis->buffer) {
+               kfree(adis->xfer);
+               adis->xfer = NULL;
                return -ENOMEM;
+       }
 
        tx = adis->buffer + burst_length;
        tx[0] = ADIS_READ_REG(adis->burst->reg_cmd);