octeon_ep_vf: Resolve netdevice usage count issue

JIRA: https://issues.redhat.com/browse/RHEL-90058

commit 8548c84
Author: Sathesh B Edara <sedara@marvell.com>
Date:   Thu Apr 24 06:39:44 2025 -0700

    octeon_ep_vf: Resolve netdevice usage count issue

    The netdevice usage count increases during transmit queue timeouts
    because netdev_hold is called in ndo_tx_timeout, scheduling a task
    to reinitialize the card. Although netdev_put is called at the end
    of the scheduled work, rtnl_unlock checks the reference count during
    cleanup. This could cause issues if transmit timeout is called on
    multiple queues.

    Fixes: cb7dd71 ("octeon_ep_vf: Add driver framework and device initialization")
    Signed-off-by: Sathesh B Edara <sedara@marvell.com>
    Link: https://patch.msgid.link/20250424133944.28128-1-sedara@marvell.com
    Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Signed-off-by: Kamal Heib <kheib@redhat.com>

Author: Kamalheib

drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c

@@ -835,7 +835,9 @@ static void octep_vf_tx_timeout(struct net_device *netdev, unsigned int txqueue)
 	struct octep_vf_device *oct = netdev_priv(netdev);
 
 	netdev_hold(netdev, NULL, GFP_ATOMIC);
-	schedule_work(&oct->tx_timeout_task);
+	if (!schedule_work(&oct->tx_timeout_task))
+		netdev_put(netdev, NULL);
+
 }
 
 static int octep_vf_set_mac(struct net_device *netdev, void *p)