CVE-2024-46776 drm/amd/display: Run DC_LOG_DC after checking link->link_enc

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Run DCLOGDC after checking link-linkenc WHAT The DCLOGDC should be run after link-linkenc is checked, not before. This fixes 1 REVERSEINULL issue reported by Coverity...