[PATCH] ipw2200: Missing kmalloc check

The ipw2200 driver code in current GIT contains a kmalloc() followed by
a memset() without handling a possible memory allocation failure.
Signed-off-by: Panagiotis Issaris <panagiotis.issaris@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

drivers/net/wireless/ipw2200.c

@@ -4030,6 +4030,10 @@ static struct ipw_rx_queue *ipw_rx_queue_alloc(struct ipw_priv *priv)
 	int i;
 
 	rxq = (struct ipw_rx_queue *)kmalloc(sizeof(*rxq), GFP_KERNEL);
+	if (unlikely(!rxq)) {
+		IPW_ERROR("memory allocation failed\n");
+		return NULL;
+	}
 	memset(rxq, 0, sizeof(*rxq));
 	spin_lock_init(&rxq->lock);
 	INIT_LIST_HEAD(&rxq->rx_free);