fix(tc): Correct return type

The fact that this was void instead of int, as required, caused
the test-running code to assume that the tests always failed.

Fixing the return type fixes the always-tests-failing bug.

Signed-off-by: Jimmy Brisson <jimmy.brisson@arm.com>
Change-Id: Ief55fe15c437c87dac1d03419a8e148f5d864b8d
1 file changed