CVE-2026-97545 xfs: don't leak new_bp if xfs_btree_bload_drop_buf fails

In the Linux kernel, the following vulnerability has been resolved: xfs: don't leak newbp if xfsbtreebloaddropbuf fails LOLLM observes that in xfsbtreebloadprepblock, xfsbtreebloaddropbuf can hit an IO error if writing the delwri buffer list to disk fails. In this case, we fail to release newbp,...