migration: simplify while loop

Unify the goto around the loop, with the exit condition at the end of it.
Both can be expressed as "while (ret >= 0)".

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>

diff --git a/migration.c b/migration.c
index 11725ae..ba8b647 100644 (file)
--- a/migration.c
+++ b/migration.c
@@ -666,14 +666,9 @@ static void *buffered_file_thread(void *opaque)
     qemu_mutex_lock_iothread();
     DPRINTF("beginning savevm\n");
     ret = qemu_savevm_state_begin(s->file, &s->params);
-    if (ret < 0) {
-        DPRINTF("failed, %d\n", ret);
-        qemu_mutex_unlock_iothread();
-        goto out;
-    }
     qemu_mutex_unlock_iothread();
 
-    while (true) {
+    while (ret >= 0) {
         int64_t current_time;
         uint64_t pending_size;
 
@@ -754,12 +749,8 @@ static void *buffered_file_thread(void *opaque)
             sleep_time += qemu_get_clock_ms(rt_clock) - current_time;
         }
         ret = buffered_flush(s);
-        if (ret < 0) {
-            break;
-        }
     }
 
-out:
     if (ret < 0) {
         migrate_fd_error(s);
     }