The amdgpu test should be stopped when amdgpu device inialize failed.
Otherwise, the amdgpu test will be executed and get wrong result.
For example, for the command "./amdgpu_test -l", all of the test cases
status will show as enabled.
Signed-off-by: Ma Jun firstname.lastname@example.org
Reviewed-by: Veerabadhran Gopalakrishnan Veerabadhran.Gopalakrishnan@amd.com