[PATCH iwl-next 1/3] idpf: clear drvdata on probe error path

[Paul Greenwalt <paul.greenwalt@intel.com>]

If idpf_probe() fails after idpf_cfg_device() succeeds,
pci_set_drvdata() leaves a pointer to freed memory. Clear
it before freeing the adapter to prevent potential
use-after-free if anything accesses pci_get_drvdata().

Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com>
---
 drivers/net/ethernet/intel/idpf/idpf_main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/intel/idpf/idpf_main.c b/drivers/net/ethernet/intel/idpf/idpf_main.c
index 807608899084..6f9579c39342 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_main.c
+++ b/drivers/net/ethernet/intel/idpf/idpf_main.c
@@ -364,6 +364,7 @@ static int idpf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 err_init_wq:
 	idpf_decfg_device(adapter);
 err_free:
+	pci_set_drvdata(pdev, NULL);
 	kfree(adapter);
 	return err;
 }
-- 
2.52.0