crypto: tegra - Set IV to NULL explicitly for AES ECB

jira LE-4159
Rebuild_History Non-Buildable kernel-5.14.0-570.41.1.el9_6
commit-author Akhil R <akhilrajeev@nvidia.com>
commit bde5582

It may happen that the variable req->iv may have stale values or
zero sized buffer by default and may end up getting used during
encryption/decryption. This inturn may corrupt the results or break the
operation. Set the req->iv variable to NULL explicitly for algorithms
like AES-ECB where IV is not used.

Fixes: 0880bb3 ("crypto: tegra - Add Tegra Security Engine driver")
	Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
	Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
(cherry picked from commit bde5582)
	Signed-off-by: Jonathan Maple <jmaple@ciq.com>

Author: PlaidCat

drivers/crypto/tegra/tegra-se-aes.c

@@ -446,6 +446,9 @@ static int tegra_aes_crypt(struct skcipher_request *req, bool encrypt)
 	if (!req->cryptlen)
 		return 0;
 
+	if (ctx->alg == SE_ALG_ECB)
+		req->iv = NULL;
+
 	rctx->encrypt = encrypt;
 	rctx->config = tegra234_aes_cfg(ctx->alg, encrypt);
 	rctx->crypto_config = tegra234_aes_crypto_cfg(ctx->alg, encrypt);