mm-migrate-split-source-folio-if-it-is-on-deferred-split-list-fix

fix an error in migrate_misplaced_folio() reported by Baolin Wang

Link: https://lkml.kernel.org/r/20240326150031.569387-1-zi.yan@sent.com
Link: https://lore.kernel.org/linux-mm/df9a644c-a007-46ac-98e3-61d4014fcfff@linux.alibaba.com/


Fixes: 616b8371 ("mm: thp: enable thp migration in generic path")
Signed-off-by: Zi Yan <ziy@nvidia.com>
Tested-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Huang, Ying <ying.huang@intel.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: SeongJae Park <sj@kernel.org>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Yin Fengwei <fengwei.yin@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>