[PATCH] migration: Don't return for postcopy_send_discard_bm_ram()

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

postcopy_send_discard_bm_ram() always return zero. Since it can't
fail, simplify and do not return anything.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
Based-on: <20211224065000.97572-1-peterx@redhat.com>
---
 migration/ram.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/migration/ram.c b/migration/ram.c
index 5234d1ece11..e241ce98461 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -2433,14 +2433,12 @@ void ram_postcopy_migrated_memory_release(MigrationState *ms)
 /**
  * postcopy_send_discard_bm_ram: discard a RAMBlock
  *
- * Returns zero on success
- *
  * Callback from postcopy_each_ram_send_discard for each RAMBlock
  *
  * @ms: current migration state
  * @block: RAMBlock to discard
  */
-static int postcopy_send_discard_bm_ram(MigrationState *ms, RAMBlock *block)
+static void postcopy_send_discard_bm_ram(MigrationState *ms, RAMBlock *block)
 {
     unsigned long end = block->used_length >> TARGET_PAGE_BITS;
     unsigned long current;
@@ -2464,8 +2462,6 @@ static int postcopy_send_discard_bm_ram(MigrationState *ms, RAMBlock *block)
         postcopy_discard_send_range(ms, one, discard_length);
         current = one + discard_length;
     }
-
-    return 0;
 }
 
 static void postcopy_chunk_hostpages_pass(MigrationState *ms, RAMBlock *block);
-- 
2.33.1