net: mpoa: Use kzfree rather than its implementation.

Use kzfree instead of memset() + kfree().

Signed-off-by: zhong jiang <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/atm/mpoa_caches.c

···
 static void in_cache_put(in_cache_entry *entry)
 {
 	if (refcount_dec_and_test(&entry->use)) {
-		memset(entry, 0, sizeof(in_cache_entry));
-		kfree(entry);
+		kzfree(entry);
 	}
 }
 
···
 static void eg_cache_put(eg_cache_entry *entry)
 {
 	if (refcount_dec_and_test(&entry->use)) {
-		memset(entry, 0, sizeof(eg_cache_entry));
-		kfree(entry);
+		kzfree(entry);
 	}
 }