Don't fail until everything is initialized

Can't call mbedtls_cipher_free(&invalid_ctx) in cleanup if
mbedtls_cipher_init(&invalid_ctx) hasn't been called.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/tests/suites/test_suite_cipher.function b/tests/suites/test_suite_cipher.function
index 9dd9679..fd2985b 100644
--- a/tests/suites/test_suite_cipher.function
+++ b/tests/suites/test_suite_cipher.function
@@ -198,9 +198,10 @@
     (void)valid_mode; /* In some configurations this is unused */
 
     mbedtls_cipher_init( &valid_ctx );
-    TEST_ASSERT( mbedtls_cipher_setup( &valid_ctx, valid_info ) == 0 );
     mbedtls_cipher_init( &invalid_ctx );
 
+    TEST_ASSERT( mbedtls_cipher_setup( &valid_ctx, valid_info ) == 0 );
+
     /* mbedtls_cipher_setup() */
     TEST_ASSERT( mbedtls_cipher_setup( &valid_ctx, NULL ) ==
                  MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );