Tried with 4.10 nightly latest, the region 'northamerica-northeast2' won't be listed, so no such issue any more. Thanks! 

$ openshift-install version
openshift-install 4.10.0-0.nightly-2022-01-11-233044
built from commit 28cfc831cee01eb503a2340b4d5365fd281bf867
release image registry.ci.openshift.org/ocp/release@sha256:189da7c77ea8f53b4359a3bb0accd86eb9d772bb10fa87e635fe25ddd2e5e3f9
release architecture amd64
$ openshift-install create cluster --dir work --log-level info
? SSH Public Key /home/fedora/.ssh/openshift-qe.pub
? Platform gcp
INFO Credentials loaded from file "/home/fedora/.gcp/osServiceAccount.json" 
? Project ID OpenShift QE (openshift-qe)
? Region  [Use arrows to move, type to filter, ? for more help]
  europe-west3 (Frankfurt, Germany)
  europe-west4 (Eemshaven, Netherlands)
  europe-west6 (Zürich, Switzerland)
> northamerica-northeast1 (Montréal, Québec, Canada)
  southamerica-east1 (São Paulo, Brazil)
  us-central1 (Council Bluffs, Iowa, USA)
  us-east1 (Moncks Corner, South Carolina, USA)

Sorry, I'm not quite sure what this bug is aimed at, to the region 'northamerica-northeast2' or not (to avoid installation failure)? Please clarify, thanks!

(In reply to Jianli Wei from comment #2)
> Sorry, I'm not quite sure what this bug is aimed at, to the region
> 'northamerica-northeast2' or not (to avoid installation failure)? Please
> clarify, thanks!

Typo, "to add the region 'northamerica-northeast2' or not".

We need to add the region to the OCP installer available regions. Please take a look at this jira issue https://issues.redhat.com/browse/SDA-5247. Our users are unable to create GCP CCS clusters in this region. 

If I didn't post the issue to the correct place or if I didn't classify it correctly, please advise me on how and where to repost this, I'm not familiar with the BZ structure & workflow.

Verify this bug with 4.10.0-0.ci-2022-01-12-215000.

northamerica-northeast2 was listed in the region list

? Region  [Use arrows to move, type to filter, ? for more help]
  europe-west4 (Eemshaven, Netherlands)
  europe-west6 (Zürich, Switzerland)
  northamerica-northeast1 (Montréal, Québec, Canada)
> northamerica-northeast2 (Toronto, Ontario, Canada)
  southamerica-east1 (São Paulo, Brazil)

Cluster could be created successfully in region northamerica-northeast2.

# oc get clusterversion
NAME      VERSION                         AVAILABLE   PROGRESSING   SINCE   STATUS
version   4.10.0-0.ci-2022-01-12-215000   True        False         3h9m    Cluster version is 4.10.0-0.ci-2022-01-12-215000
# oc get machines -n openshift-machine-api
NAME                            PHASE     TYPE            REGION                    ZONE                        AGE
gpei-111-r2pmr-master-0         Running   n1-standard-4   northamerica-northeast2   northamerica-northeast2-a   3h33m
gpei-111-r2pmr-master-1         Running   n1-standard-4   northamerica-northeast2   northamerica-northeast2-b   3h33m
gpei-111-r2pmr-master-2         Running   n1-standard-4   northamerica-northeast2   northamerica-northeast2-c   3h33m
gpei-111-r2pmr-worker-a-wzhb7   Running   n1-standard-4   northamerica-northeast2   northamerica-northeast2-a   3h25m
gpei-111-r2pmr-worker-b-7jmb7   Running   n1-standard-4   northamerica-northeast2   northamerica-northeast2-b   3h25m

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Moderate: OpenShift Container Platform 4.10.3 security update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2022:0056