md: raid1-10: Unify r{1,10}bio_pool_free

Avoiding duplicated code, since they just execute a kfree.

Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/drivers/md/raid1-10.c b/drivers/md/raid1-10.c
index 7d968bf..54db341 100644
--- a/drivers/md/raid1-10.c
+++ b/drivers/md/raid1-10.c
@@ -34,6 +34,11 @@ struct resync_pages {
 	struct page	*pages[RESYNC_PAGES];
 };
 
+static void rbio_pool_free(void *rbio, void *data)
+{
+	kfree(rbio);
+}
+
 static inline int resync_alloc_pages(struct resync_pages *rp,
 				     gfp_t gfp_flags)
 {