[PATCH v2 6/6] mac80211: fils_aead: Use __cleanup() for aes_cmac_key instead of memzero_explicit()

[Thomas Huth <thuth@redhat.com>]

From: Thomas Huth <thuth@redhat.com>

By using __cleanup(aes_cmac_zeroize_key) for clearing the key data,
we can save one line of code here.

Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 net/mac80211/fils_aead.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/mac80211/fils_aead.c b/net/mac80211/fils_aead.c
index d2f4a17eab990..293590976489a 100644
--- a/net/mac80211/fils_aead.c
+++ b/net/mac80211/fils_aead.c
@@ -24,7 +24,7 @@ static int aes_s2v(const u8 *in_key, size_t key_len,
 		   size_t num_elem, const u8 *addr[], size_t len[], u8 *v)
 {
 	u8 d[AES_BLOCK_SIZE], tmp[AES_BLOCK_SIZE] = {};
-	struct aes_cmac_key key;
+	struct aes_cmac_key key __cleanup(aes_cmac_zeroize_key);
 	struct aes_cmac_ctx ctx;
 	size_t i;
 	int res;
@@ -62,7 +62,6 @@ static int aes_s2v(const u8 *in_key, size_t key_len,
 	aes_cmac_update(&ctx, d, AES_BLOCK_SIZE);
 	aes_cmac_final(&ctx, v);
 
-	memzero_explicit(&key, sizeof(key));
 	return 0;
 }
 
-- 
2.55.0