Description of problem:
When viewing a host entry that has no location assigned, 6.7 will render a "undefined method `title' for nil:NilClass" error on the left hand side where the host details are listed.

This was not an issue in 6.6

Version-Release number of selected component (if applicable):
6.7.5

How reproducible:
100%

Steps to Reproduce:
1. visit https://dogfood.sat.engineering.redhat.com/hosts/sat-r220-02.lab.eng.rdu2.redhat.com

Actual results:
undefined method `title' for nil:NilClass

Expected results:
host details are shown

Additional info:
from production log:
2020-12-21T05:11:32 [I|app|49156a3c] Started GET "/hosts/sat-r220-02.lab.eng.rdu2.redhat.com/overview" for 10.36.114.136 at 2020-12-21 05:11:32 -0500
2020-12-21T05:11:32 [I|app|49156a3c] Processing by HostsController#overview as HTML
2020-12-21T05:11:32 [I|app|49156a3c]   Parameters: {"id"=>"sat-r220-02.lab.eng.rdu2.redhat.com"}
2020-12-21T05:11:32 [I|app|49156a3c]   Rendered hosts/_overview.html.erb (181.3ms)
2020-12-21T05:11:32 [W|app|49156a3c] Failed to fetch overview information
2020-12-21T05:11:32 [I|app|49156a3c]   Rendered common/_ajax_error.html.erb (0.7ms)
2020-12-21T05:11:32 [I|app|49156a3c] Completed 500 Internal Server Error in 208ms (Views: 1.3ms | ActiveRecord: 24.7ms)