drivers:net: Remove unnecessary OOM messages after netdev_alloc_skb

Emitting netdev_alloc_skb and netdev_alloc_skb_ip_align OOM
messages is unnecessary as there is already a dump_stack
after allocation failures.

Other trivial changes around these removals:

Convert a few comparisons of pointer to 0 to !pointer.
Change flow to remove unnecessary label.
Remove now unused variable.
Hoist assignment from if.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/i825xx/lib82596.c b/drivers/net/ethernet/i825xx/lib82596.c
index f045ea4..d653bac 100644
--- a/drivers/net/ethernet/i825xx/lib82596.c
+++ b/drivers/net/ethernet/i825xx/lib82596.c
@@ -715,14 +715,12 @@
 				rbd->v_data = newskb->data;
 				rbd->b_data = SWAP32(dma_addr);
 				DMA_WBACK_INV(dev, rbd, sizeof(struct i596_rbd));
-			} else
+			} else {
 				skb = netdev_alloc_skb_ip_align(dev, pkt_len);
+			}
 memory_squeeze:
 			if (skb == NULL) {
 				/* XXX tulip.c can defer packets here!! */
-				printk(KERN_ERR
-				       "%s: i596_rx Memory squeeze, dropping packet.\n",
-				       dev->name);
 				dev->stats.rx_dropped++;
 			} else {
 				if (!rx_in_place) {