[PATCH] net: ena: fix PHC cleanup on probe failure

[Guangshuo Li]

ena_probe() initializes the PHC as part of ena_device_init(), but the
probe failure path does not destroy it before freeing the PHC private
data.

The normal removal path calls ena_phc_destroy() through
ena_destroy_device() before ena_phc_free(). However, if probe fails
after ena_device_init() succeeds, the error path reaches ena_phc_free()
without unregistering the PTP clock or destroying the device PHC
resources.

Call ena_phc_destroy() in the probe error path before freeing the PHC
private data.

This issue was found by manual code inspection.

Fixes: e0ea34158ee8 ("net: ena: Add PHC support in the ENA driver")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Guangshuo Li <lgs201920130244@xxxxxxxxx>
---
 drivers/net/ethernet/amazon/ena/ena_netdev.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c
index ea89619039d8..5f0864d16dd3 100644
--- a/drivers/net/ethernet/amazon/ena/ena_netdev.c
+++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c
@@ -4122,6 +4122,7 @@ static int ena_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 err_device_destroy:
 	ena_com_delete_host_info(ena_dev);
 	ena_com_admin_destroy(ena_dev);
+	ena_phc_destroy(adapter);
 ena_devlink_destroy:
 	ena_devlink_free(devlink);
 err_metrics_destroy:
-- 
2.43.0