[PATCH net 2/9] ethtool: module: avoid leaking a netdev ref on module flash errors

[Jakub Kicinski <kuba@kernel.org>]

module_flash_fw_schedule() is missing undo for setting
the "in_progress" flag and taking the netdev reference.
Delay taking these, the device can't disappear while
we are holding rtnl_lock.

Fixes: 32b4c8b53ee7 ("ethtool: Add ability to flash transceiver modules' firmware")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
CC: andrew@lunn.ch
CC: maxime.chevallier@bootlin.com
CC: danieller@nvidia.com
CC: petrm@nvidia.com
---
 net/ethtool/module.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/net/ethtool/module.c b/net/ethtool/module.c
index 741f6fb25d45..392c03935e5e 100644
--- a/net/ethtool/module.c
+++ b/net/ethtool/module.c
@@ -319,8 +319,6 @@ module_flash_fw_schedule(struct net_device *dev, const char *file_name,
 	if (err < 0)
 		goto err_release_firmware;
 
-	dev->ethtool->module_fw_flash_in_progress = true;
-	netdev_hold(dev, &module_fw->dev_tracker, GFP_KERNEL);
 	fw_update->dev = dev;
 	fw_update->ntf_params.portid = info->snd_portid;
 	fw_update->ntf_params.seq = info->snd_seq;
@@ -335,6 +333,9 @@ module_flash_fw_schedule(struct net_device *dev, const char *file_name,
 	if (err < 0)
 		goto err_release_firmware;
 
+	dev->ethtool->module_fw_flash_in_progress = true;
+	netdev_hold(dev, &module_fw->dev_tracker, GFP_KERNEL);
+
 	schedule_work(&module_fw->work);
 
 	return 0;
-- 
2.54.0