dma/pool: eliminate alloc_pages warning in atomic_pool_expand

atomic_pool_expand iteratively tries the allocation while decrementing
the page order. There is no need to issue a warning if an attempted
allocation fails.

Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Fixes: d7e673e ("dma-pool: Only allocate from CMA when in same memory zone")
[mszyprow: fixed typo]
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20251202152810.142370-1-dave.kleikamp@oracle.com

Author: kleikamp

kernel/dma/pool.c

@@ -93,7 +93,7 @@ static int atomic_pool_expand(struct gen_pool *pool, size_t pool_size,
 			page = dma_alloc_from_contiguous(NULL, 1 << order,
 							 order, false);
 		if (!page)
-			page = alloc_pages(gfp, order);
+			page = alloc_pages(gfp | __GFP_NOWARN, order);
 	} while (!page && order-- > 0);
 	if (!page)
 		goto out;