tf-a-main: avoid fast-forward master if any of the sub-jobs failed

Avoided executing the fast-forward-master script if any of the
sub-jobs in tf-a-main failed.

Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Change-Id: I0327324ede0d32c9001ab9861bfee2672e78c159
1 file changed