mm/gup: remove page_folio() in memfd_pin_folios()

We can get the folio directly from the folio batch, so remove the
unnecessary page_folio() call.

Link: https://lkml.kernel.org/r/20250430010059.892632-3-vishal.moola@gmail.com


Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>