From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

From: Navid Emamdoost <redacted>

commit 9c0530e898f384c5d279bfcebd8bb17af1105873 upstream.

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

Signed-off-by: Navid Emamdoost <redacted>
Reviewed-by: Alexandru Ardelean <redacted>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
[krzk: backport applied to adis16400_buffer.c instead of adis_buffer.c]
Signed-off-by: Krzysztof Kozlowski <redacted>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/iio/imu/adis16400_buffer.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/iio/imu/adis16400_buffer.c
+++ b/drivers/iio/imu/adis16400_buffer.c

@@ -37,8 +37,11 @@ int adis16400_update_scan_mode(struct ii
 		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(ADIS16400_GLOB_CMD);