For tests, rename ASSERT_ALLOC() to TEST_CALLOC_OR_FAIL()

Signed-off-by: Tom Cosgrove <tom.cosgrove@arm.com>
diff --git a/tests/suites/test_suite_pkcs12.function b/tests/suites/test_suite_pkcs12.function
index e125532..c4df8ab 100644
--- a/tests/suites/test_suite_pkcs12.function
+++ b/tests/suites/test_suite_pkcs12.function
@@ -42,7 +42,7 @@
 
     salt_len = salt_arg->len;
 
-    ASSERT_ALLOC(output_data, key_size);
+    TEST_CALLOC_OR_FAIL(output_data, key_size);
 
     int ret = mbedtls_pkcs12_derivation(output_data,
                                         key_size,