Propagate errors unchanged.
Free allocated working area in the error return path.
Remove duplicated cleanup code by rewriting the logic.
As a side-effect, fixes a scan-build warning.
Change-Id: I80e3c0015be672778f916e998c8c2e4f23d7588c
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/117
Tested-by: jenkins
Reviewed-by: Øyvind Harboe <oyvindharboe@gmail.com>