[PATCH v3] erofs-utils: Add missing error code handling.

[Gao Xiang]

On 2019/7/24 17:12, Pratik Shinde wrote:
> Handling error conditions that are missed in few scenarios.
> also, mkfs command should return 1 on failure and 0 on success.
> 
> Signed-off-by: Pratik Shinde <pratikshinde320 at gmail.com>

looks good to me, will apply later....
(since Li Guifu cannot send outgoing email...I will apply directly.)

Thanks,
Gao Xiang