net: pxa168_eth: Fix a potential data race in pxa168_eth_remove

Commit 0571a753 cancelled delayed work too late, keeping small
race. Cancel work sooner to close it completely.
Signed-off-by: NPavel Machek (CIP) <pavel@denx.de>
Fixes: 0571a753 ("net: pxa168_eth: Fix a potential data race in pxa168_eth_remove")
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/pxa168_eth.c

@@ -1528,6 +1528,7 @@ static int pxa168_eth_remove(struct platform_device *pdev)
 	struct net_device *dev = platform_get_drvdata(pdev);
 	struct pxa168_eth_private *pep = netdev_priv(dev);
 
+	cancel_work_sync(&pep->tx_timeout_task);
 	if (pep->htpr) {
 		dma_free_coherent(pep->dev->dev.parent, HASH_ADDR_TABLE_SIZE,
 				  pep->htpr, pep->htpr_dma);
@@ -1539,7 +1540,6 @@ static int pxa168_eth_remove(struct platform_device *pdev)
 	clk_disable_unprepare(pep->clk);
 	mdiobus_unregister(pep->smi_bus);
 	mdiobus_free(pep->smi_bus);
-	cancel_work_sync(&pep->tx_timeout_task);
 	unregister_netdev(dev);
 	free_netdev(dev);
 	return 0;