[IPV4] fib_semantics: kmalloc + memset conversion to kzalloc

fib_semantics: kmalloc + memset conversion to kzalloc
fix to avoid memset entirely.
Signed-off-by: NJoonwoo Park <joonwpark81@gmail.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv4/fib_semantics.c

@@ -605,10 +605,10 @@ static inline unsigned int fib_laddr_hashfn(__be32 val)
 static struct hlist_head *fib_hash_alloc(int bytes)
 {
 	if (bytes <= PAGE_SIZE)
-		return kmalloc(bytes, GFP_KERNEL);
+		return kzalloc(bytes, GFP_KERNEL);
 	else
 		return (struct hlist_head *)
-			__get_free_pages(GFP_KERNEL, get_order(bytes));
+			__get_free_pages(GFP_KERNEL | __GFP_ZERO, get_order(bytes));
 }
 
 static void fib_hash_free(struct hlist_head *hash, int bytes)
@@ -712,12 +712,8 @@ struct fib_info *fib_create_info(struct fib_config *cfg)
 		if (!new_info_hash || !new_laddrhash) {
 			fib_hash_free(new_info_hash, bytes);
 			fib_hash_free(new_laddrhash, bytes);
-		} else {
-			memset(new_info_hash, 0, bytes);
-			memset(new_laddrhash, 0, bytes);
-
+		} else
 			fib_hash_move(new_info_hash, new_laddrhash, new_size);
-		}
 
 		if (!fib_hash_size)
 			goto failure;