ng_hci: handle NG_HCI_M_PULLUP failure in le_advertizing_report

PR: 267396
Reported by: Robert Morris <rtm@lcs.mit.edu>
Reviewed by: takawata
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D37228

(cherry picked from commit 05c0c99ea37f2558155f346769a00b4180cb59ed)