scsi: ufs: ufshpb: Clean up the handler when device resets HPB information

"When the device is powered off by the host, the device may restore L2P map
data upon power up or build from the host's HPB READ command. In case
device powered up and lost HPB information, device can signal to the host
through HPB Sense data, by setting HPB Operation as '2' which will inform
the host that device reset HPB information."

Clean up the handler and make the intent of this handler more readable, no
functional change.

Link: https://lore.kernel.org/r/20220505134707.35929-4-huobean@gmail.com


Reviewed-by: Keoseong Park <keosung.park@samsung.com>
Reviewed-by: Daejun Park <daejun7.park@samsung.com>
Signed-off-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>