When auxiliary_device_add() returns error and then calls
auxiliary_device_uninit(), callback function adev_release calls kfree(madev).
We shouldn't call kfree(madev) again in the error handling path. Set 'madev'
to NULL.

Signed-off-by: Ma Ke <redacted>
---
Changes in v2:
- streamlined the patch according suggestions;
- revised the description.
---
 drivers/net/ethernet/microsoft/mana/mana_en.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/microsoft/mana/mana_en.c

b/drivers/net/ethernet/microsoft/mana/mana_en.c
index d087cf954f75..608ad31a9702 100644

--- a/drivers/net/ethernet/microsoft/mana/mana_en.c
+++ b/drivers/net/ethernet/microsoft/mana/mana_en.c

@@ -2798,6 +2798,8 @@ static int add_adev(struct gdma_dev *gd)
        if (ret)
                goto init_fail;

+       /* madev is owned by the auxiliary device */
+       madev = NULL;
        ret = auxiliary_device_add(adev);
        if (ret)
                goto add_fail;
--

2.25.1