scsi: cxlflash: Drop DID_ALLOC_FAILURE use

scsi: cxlflash: Drop DID_ALLOC_FAILURE use

DID_ALLOC_FAILURE is internal to the SCSI layer. Drivers must not use it
because:

 1. It's not propagated upwards, so SG IO/passthrough users will not see an
    error and think a command was successful.

 2. There is no handling for it in scsi_decide_disposition() so it results
    in entering SCSI error handling.

By the code comment, it looks like the driver wanted a retryable error
code, so this has it use DID_ERROR.

Link: https://lore.kernel.org/r/20220812010027.8251-8-michael.christie@oracle.com
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>