tests: aes_encrypt_init() and aes_decrypt_init() to use TEST_FAIL

Now the these functions cannot be made to fail by forcing the memory
allocation fail since the OpenSSL-internal version is used, add
TEST_FAIL check to allow OOM test cases to be converted to use the
TEST_FAIL mechanism without reducing coverage.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>

src/crypto/crypto_openssl.c

@@ -256,6 +256,9 @@ void * aes_encrypt_init(const u8 *key, size_t len)
 	EVP_CIPHER_CTX *ctx;
 	const EVP_CIPHER *type;
 
+	if (TEST_FAIL())
+		return NULL;
+
 	type = aes_get_evp_cipher(len);
 	if (type == NULL)
 		return NULL;
@@ -306,6 +309,9 @@ void * aes_decrypt_init(const u8 *key, size_t len)
 	EVP_CIPHER_CTX *ctx;
 	const EVP_CIPHER *type;
 
+	if (TEST_FAIL())
+		return NULL;
+
 	type = aes_get_evp_cipher(len);
 	if (type == NULL)
 		return NULL;