Revert "Don't return immediately from reboot commands."

This reverts commit 11b8326aa3b6d1f14b9fe289978c44b89554ff8e.
nandroid: Allow tar backups of yaffs2 partitions

Change-Id: I33dca9864b043527640c6586751c9399bc3fb156
remove rs for now

Signed-off-by: Willi Ye <williye97@gmail.com>