crypto: tegra - check return value for hash do_one_req

[ Upstream commit dcf8b7e ]

Initialize and check the return value in hash *do_one_req() functions
and exit the function if there is an error. This fixes the
'uninitialized variable' warnings reported by testbots.

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/202412071747.flPux4oB-lkp@intel.com/
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>

Author: Akhil R

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

@@ -1581,18 +1581,24 @@ static int tegra_cmac_do_one_req(struct crypto_engine *engine, void *areq)
 	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
 	struct tegra_cmac_ctx *ctx = crypto_ahash_ctx(tfm);
 	struct tegra_se *se = ctx->se;
-	int ret;
+	int ret = 0;
 
 	if (rctx->task & SHA_UPDATE) {
 		ret = tegra_cmac_do_update(req);
+		if (ret)
+			goto out;
+
 		rctx->task &= ~SHA_UPDATE;
 	}
 
 	if (rctx->task & SHA_FINAL) {
 		ret = tegra_cmac_do_final(req);
+		if (ret)
+			goto out;
+
 		rctx->task &= ~SHA_FINAL;
 	}
-
+out:
 	crypto_finalize_hash_request(se->engine, req, ret);
 
 	return 0;

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

@@ -417,14 +417,21 @@ static int tegra_sha_do_one_req(struct crypto_engine *engine, void *areq)
 
 	if (rctx->task & SHA_UPDATE) {
 		ret = tegra_sha_do_update(req);
+		if (ret)
+			goto out;
+
 		rctx->task &= ~SHA_UPDATE;
 	}
 
 	if (rctx->task & SHA_FINAL) {
 		ret = tegra_sha_do_final(req);
+		if (ret)
+			goto out;
+
 		rctx->task &= ~SHA_FINAL;
 	}
 
+out:
 	crypto_finalize_hash_request(se->engine, req, ret);
 
 	return 0;