crypto: hisilicon/sec2 - optimize the error return process

Add the printf of an error message and optimized the handling
process of ret.
Signed-off-by: Chenghai Huang <huangchenghai2@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/hisilicon/sec2/sec_crypto.c

@@ -850,6 +850,7 @@ static int sec_skcipher_setkey(struct crypto_skcipher *tfm, const u8 *key,
 		ret = sec_skcipher_aes_sm4_setkey(c_ctx, keylen, c_mode);
 		break;
 	default:
+		dev_err(dev, "sec c_alg err!\n");
 		return -EINVAL;
 	}
 
@@ -1172,7 +1173,8 @@ static int sec_aead_setkey(struct crypto_aead *tfm, const u8 *key,
 		return 0;
 	}
 
-	if (crypto_authenc_extractkeys(&keys, key, keylen))
+	ret = crypto_authenc_extractkeys(&keys, key, keylen);
+	if (ret)
 		goto bad_key;
 
 	ret = sec_aead_aes_set_key(c_ctx, &keys);
@@ -1189,6 +1191,7 @@ static int sec_aead_setkey(struct crypto_aead *tfm, const u8 *key,
 
 	if ((ctx->a_ctx.mac_len & SEC_SQE_LEN_RATE_MASK)  ||
 	    (ctx->a_ctx.a_key_len & SEC_SQE_LEN_RATE_MASK)) {
+		ret = -EINVAL;
 		dev_err(dev, "MAC or AUTH key length error!\n");
 		goto bad_key;
 	}
@@ -1197,7 +1200,7 @@ static int sec_aead_setkey(struct crypto_aead *tfm, const u8 *key,
 
 bad_key:
 	memzero_explicit(&keys, sizeof(struct crypto_authenc_keys));
-	return -EINVAL;
+	return ret;
 }