page_pool: remove WARN_ON() with OR

Having an OR in WARN_ON() makes me sad because it's impossible to tell
which condition is true when triggered.

Split a WARN_ON() with an OR in page_pool_disable_direct_recycling().
Signed-off-by: David Wei <dw@davidwei.uk>
Reviewed-by: Mina Almasry <almasrymina@google.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Acked-by: Jesper Dangaard Brouer <hawk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/core/page_pool.c

@@ -1027,8 +1027,8 @@ static void page_pool_disable_direct_recycling(struct page_pool *pool)
 	/* To avoid races with recycling and additional barriers make sure
 	 * pool and NAPI are unlinked when NAPI is disabled.
 	 */
-	WARN_ON(!test_bit(NAPI_STATE_SCHED, &pool->p.napi->state) ||
-		READ_ONCE(pool->p.napi->list_owner) != -1);
+	WARN_ON(!test_bit(NAPI_STATE_SCHED, &pool->p.napi->state));
+	WARN_ON(READ_ONCE(pool->p.napi->list_owner) != -1);
 
 	WRITE_ONCE(pool->p.napi, NULL);
 }