[PATCH] ice: Fix possible double free in error handling path

[Ma Ke]

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

Cc: stable@xxxxxxxxxxxxxxx
Fixes: f9f5301e7e2d ("ice: Register auxiliary device to provide RDMA")
Signed-off-by: Ma Ke <make24@xxxxxxxxxxx>
---
 drivers/net/ethernet/intel/ice/ice_idc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/intel/ice/ice_idc.c b/drivers/net/ethernet/intel/ice/ice_idc.c
index 145b27f2a4ce..5db05f54a80c 100644
--- a/drivers/net/ethernet/intel/ice/ice_idc.c
+++ b/drivers/net/ethernet/intel/ice/ice_idc.c
@@ -330,6 +330,7 @@ int ice_plug_aux_dev(struct ice_pf *pf)
 		return ret;
 	}
 
+	iadev = NULL;
 	ret = auxiliary_device_add(adev);
 	if (ret) {
 		auxiliary_device_uninit(adev);
-- 
2.25.1