wireless: Remove unnecessary alloc/OOM messages, alloc cleanups

alloc failures already get standardized OOM
messages and a dump_stack.

Convert kzalloc's with multiplies to kcalloc.
Convert kmalloc's with multiplies to kmalloc_array.
Remove now unused variables.
Remove unnecessary memset after kzalloc->kcalloc.
Whitespace cleanups for these changes.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wireless/mwifiex/wmm.c b/drivers/net/wireless/mwifiex/wmm.c
index 135d96d..32adc87 100644
--- a/drivers/net/wireless/mwifiex/wmm.c
+++ b/drivers/net/wireless/mwifiex/wmm.c
@@ -109,12 +109,9 @@
 	struct mwifiex_ra_list_tbl *ra_list;
 
 	ra_list = kzalloc(sizeof(struct mwifiex_ra_list_tbl), GFP_ATOMIC);
-
-	if (!ra_list) {
-		dev_err(adapter->dev, "%s: failed to alloc ra_list\n",
-			__func__);
+	if (!ra_list)
 		return NULL;
-	}
+
 	INIT_LIST_HEAD(&ra_list->list);
 	skb_queue_head_init(&ra_list->skb_head);