scsi: target: iscsi: Make sure the np under each tpg is unique
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.4.180 by commit c6a7077144ed291cfbf736875ad0fe89e6291f02. For more details please see the references link.