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 v4.19.230 by commit ded80123b84253ecc6c6cfd1fbbbd99f51c984ec. For more details please see the references link.