[Coverity CID :187064] Control flow issues in /subsys/bluetooth/host/mesh/cfg_srv.c

[mandarcthorat1]

Static code scan issues seen in File: /subsys/bluetooth/host/mesh/cfg_srv.c
Category: Control flow issues
Function: bt_mesh_label_uuid_get
Component: Bluetooth
CID: 187064
Please fix or provide comments to square it off in coverity in the link: https://scan9.coverity.com/reports.htm#v32951/p12996

[jhedberg]

Marked as false positive in coverity (see the the issue there for a more detailed explanation)