nfsd: don't ignore the return code of svc_proc_register()

Olga Kornievskaiarequested to merge
okorniev/centos-stream-9:rhel-93612 into main

nfsd: don't ignore the return code of svc_proc_register()

JIRA: https://issues.redhat.com/browse/RHEL-93612
CVE: CVE-2025-22026

Signed-off-by: Olga Kornievskaia okorniev@redhat.com

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