zram: add GFP_NOWARN to incompressible zsmalloc handle allocation

We normally use __GFP_NOWARN for zsmalloc handle allocations, add it to
write_incompressible_page() allocation too.

Link: https://lkml.kernel.org/r/20250303022425.285971-7-senozhatsky@chromium.org


Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Hillf Danton <hdanton@sina.com>
Cc: Kairui Song <ryncsn@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Yosry Ahmed <yosry.ahmed@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>