net: page_pool: fix warning code

WARN_ON_ONCE("string") doesn't really do what appears to
be intended, so fix that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Fixes: 90de47f ("page_pool: fragment API support for 32-bit arch with 64-bit DMA")
Link: https://patch.msgid.link/20240705134221.2f4de205caa1.I28496dc0f2ced580282d1fb892048017c4491e21@changeid
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: jmberg-intel

net/core/page_pool.c

@@ -444,7 +444,7 @@ static bool page_pool_dma_map(struct page_pool *pool, netmem_ref netmem)
 	return true;
 
 unmap_failed:
-	WARN_ON_ONCE("unexpected DMA address, please report to netdev@");
+	WARN_ONCE(1, "unexpected DMA address, please report to netdev@");
 	dma_unmap_page_attrs(pool->p.dev, dma,
 			     PAGE_SIZE << pool->p.order, pool->p.dma_dir,
 			     DMA_ATTR_SKIP_CPU_SYNC | DMA_ATTR_WEAK_ORDERING);