[Coverity CID :190954]Error handling issues in /subsys/bluetooth/controller/ll_sw/nordic/lll/lll_test.c

[mandarcthorat1]

Static code scan issues seen in File: /subsys/bluetooth/controller/ll_sw/nordic/lll/lll_test.c
Category: Error handling issues
Function: ll_test_end
Component: Bluetooth
CID: 190954
Please fix or provide comments to square it off in coverity in the link: https://scan9.coverity.com/reports.htm#v32951/p12996