[PATCH v2] iio: imu: adis16400: fix memory leak

[Navid Emamdoost]

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

v2: set adis->xfer = NULL to avoid any potential double free.

Signed-off-by: Navid Emamdoost <navid.emamdo...@gmail.com>
---
 drivers/iio/imu/adis_buffer.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/imu/adis_buffer.c b/drivers/iio/imu/adis_buffer.c
index 9ac8356d9a95..78fe83c1f4fe 100644
--- 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);
-- 
2.17.1