scsi: bsg: Fix errno when scsi_bsg_register_queue() fails

When the value of error is printed, it will always be 0. We should print
the correct error code when scsi_bsg_register_queue() fails.

Link: https://lore.kernel.org/r/[email protected]
Fixes: ead09dd ("scsi: bsg: Simplify device registration")
Cc: Jens Axboe <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Jackie Liu <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

Author: JackieLiu1

drivers/scsi/scsi_sysfs.c

@@ -1374,6 +1374,7 @@ int scsi_sysfs_add_sdev(struct scsi_device *sdev)
 			 * We're treating error on bsg register as non-fatal, so
 			 * pretend nothing went wrong.
 			 */
+			error = PTR_ERR(sdev->bsg_dev);
 			sdev_printk(KERN_INFO, sdev,
 				    "Failed to register bsg queue, errno=%d\n",
 				    error);