[PATCH] prism54: Free skb after disabling interrupts

The dev_kfree_skb in islpci_eth_transmit happens while irqs are still
disabled, so either dev_kfree_skb_irq needs to be used or the skb
needs to be freed after irqs have been enabled again. This patch
should fix it.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

drivers/net/wireless/prism54/islpci_eth.c

@@ -241,12 +241,10 @@ islpci_eth_transmit(struct sk_buff *skb, struct net_device *ndev)
 	return 0;
 
       drop_free:
-	/* free the skbuf structure before aborting */
-	dev_kfree_skb(skb);
-	skb = NULL;
-
 	priv->statistics.tx_dropped++;
 	spin_unlock_irqrestore(&priv->slock, flags);
+	dev_kfree_skb(skb);
+	skb = NULL;
 	return err;
 }