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 v5.15.24 by commit 4f786e8f18c3e80a168aac3e4f9da99310b8fcdd. For more details please see the references link.