benchmark application: TIME_AND_TSC doesn't check return code

[RonEld]

The return code of function calls in TIME_AND_TSC is not checked

[ciarmcom]

ARM Internal Ref: IOTSSL-2418

[andresag01]

@sbutcher-arm, @RonEld: I think this was fixed by #194. Should we close this issue

[andresag01]

This issue has been fixed via #194, so can now be closed.