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/init.c b/drivers/net/wireless/mwifiex/init.c
index e00b806..84848c3 100644
--- a/drivers/net/wireless/mwifiex/init.c
+++ b/drivers/net/wireless/mwifiex/init.c
@@ -39,11 +39,8 @@
 	unsigned long flags;
 
 	bss_prio = kzalloc(sizeof(struct mwifiex_bss_prio_node), GFP_KERNEL);
-	if (!bss_prio) {
-		dev_err(adapter->dev, "%s: failed to alloc bss_prio\n",
-			__func__);
+	if (!bss_prio)
 		return -ENOMEM;
-	}
 
 	bss_prio->priv = priv;
 	INIT_LIST_HEAD(&bss_prio->list);