mmc: block: Fix error handling of device attributes creation

When a failure occurs while creating a device attribute,
we need to remove previously created attributes prior to deleting
the disk.

Change-Id: I01a8d4437f372abdf33230c34a73b5806e97188b
Signed-off-by: Maya Erez <merez@codeaurora.org>
[merez@codeaurora.org: fixed conflicts as BKOPS is not taken]
Signed-off-by: Maya Erez <merez@codeaurora.org>
[xiaonian@codeaurora.org: fix trivial merge conflict]
Signed-off-by: Xiaonian Wang <xiaonian@codeaurora.org>
1 file changed