scsi: correct return values for .eh_abort_handler implementations

scsi: correct return values for .eh_abort_handler implementations

commit b6c92b7e0af575e2b8b05bdf33633cf9e1661cbf upstream.

The .eh_abort_handler needs to return SUCCESS, FAILED, or
FAST_IO_FAIL. So fixup all callers to adhere to this requirement.

Reviewed-by: Robert Elliott <elliott@hp.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
[bwh: Backported to 3.2: drop changes to esas2r]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>