scsi: ufs: Clear the aborted tag in case of ICE error

ICE error is handled as a fatal error, hence all the outstanding
requests are being aborted.
This patch clears the tag in case of device management requests
and fixes a bug where outstanding_tasks was cleared instead of
outstanding_reqs.

Change-Id: If160b6179edd4e36c541ed7f1b14dfc01de0842b
Signed-off-by: Maya Erez <merez@codeaurora.org>