hpsa: correct ioaccel2 error procecssing.

set offload_to_be_enabled to 0 when an ioaccel2 error is processed.

Before, an ioaccel completion error would turn of ioaccel but a rescan
would turn it back on again.
Reviewed-by: NScott Teel <scott.teel@microsemi.com>
Reviewed-by: NKevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: NDon Brace <don.brace@microsemi.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/hpsa.c

@@ -2360,8 +2360,10 @@ static void process_ioaccel2_completion(struct ctlr_info *h,
 		c2->error_data.serv_response ==
 			IOACCEL2_SERV_RESPONSE_FAILURE) {
 		if (c2->error_data.status ==
-			IOACCEL2_STATUS_SR_IOACCEL_DISABLED)
+			IOACCEL2_STATUS_SR_IOACCEL_DISABLED) {
 			dev->offload_enabled = 0;
+			dev->offload_to_be_enabled = 0;
+		}
 
 		return hpsa_retry_cmd(h, c);
 	}