Update memtag code behavior to match comment.

Test: go test soong tests
Change-Id: I630c06f01c90256b1990c37b9236e8967a5fa316
diff --git a/cc/sanitize_test.go b/cc/sanitize_test.go
index c43547c..0070e40 100644
--- a/cc/sanitize_test.go
+++ b/cc/sanitize_test.go
@@ -359,9 +359,9 @@
 	checkHasMemtagNote(t, ctx.ModuleForTests("set_memtag_binary_override_default_disable", variant), Async)
 	checkHasMemtagNote(t, ctx.ModuleForTests("set_memtag_binary_override_default_sync", variant), Sync)
 
-	checkHasMemtagNote(t, ctx.ModuleForTests("set_memtag_test_no_override", variant), Async)
-	checkHasMemtagNote(t, ctx.ModuleForTests("set_memtag_test_override_default_async", variant), Async)
-	checkHasMemtagNote(t, ctx.ModuleForTests("set_memtag_test_override_default_disable", variant), Async)
+	checkHasMemtagNote(t, ctx.ModuleForTests("set_memtag_test_no_override", variant), Sync)
+	checkHasMemtagNote(t, ctx.ModuleForTests("set_memtag_test_override_default_async", variant), Sync)
+	checkHasMemtagNote(t, ctx.ModuleForTests("set_memtag_test_override_default_disable", variant), Sync)
 	checkHasMemtagNote(t, ctx.ModuleForTests("set_memtag_test_override_default_sync", variant), Sync)
 
 	checkHasMemtagNote(t, ctx.ModuleForTests("set_memtag_set_async_binary_no_override", variant), Async)
@@ -434,9 +434,9 @@
 	checkHasMemtagNote(t, ctx.ModuleForTests("set_memtag_binary_override_default_disable", variant), Async)
 	checkHasMemtagNote(t, ctx.ModuleForTests("set_memtag_binary_override_default_sync", variant), Sync)
 
-	checkHasMemtagNote(t, ctx.ModuleForTests("set_memtag_test_no_override", variant), Async)
-	checkHasMemtagNote(t, ctx.ModuleForTests("set_memtag_test_override_default_async", variant), Async)
-	checkHasMemtagNote(t, ctx.ModuleForTests("set_memtag_test_override_default_disable", variant), Async)
+	checkHasMemtagNote(t, ctx.ModuleForTests("set_memtag_test_no_override", variant), Sync)
+	checkHasMemtagNote(t, ctx.ModuleForTests("set_memtag_test_override_default_async", variant), Sync)
+	checkHasMemtagNote(t, ctx.ModuleForTests("set_memtag_test_override_default_disable", variant), Sync)
 	checkHasMemtagNote(t, ctx.ModuleForTests("set_memtag_test_override_default_sync", variant), Sync)
 
 	checkHasMemtagNote(t, ctx.ModuleForTests("set_memtag_set_async_binary_no_override", variant), Async)