diff --git a/memory.c b/memory.c
index 85798b0299..4895e25376 100644
--- a/memory.c
+++ b/memory.c
@@ -1332,6 +1332,7 @@ void memory_region_add_coalescing(MemoryRegion *mr,
 void memory_region_clear_coalescing(MemoryRegion *mr)
 {
     CoalescedMemoryRange *cmr;
+    bool updated = false;
 
     qemu_flush_coalesced_mmio_buffer();
     mr->flush_coalesced_mmio = false;
@@ -1340,8 +1341,12 @@ void memory_region_clear_coalescing(MemoryRegion *mr)
         cmr = QTAILQ_FIRST(&mr->coalesced);
         QTAILQ_REMOVE(&mr->coalesced, cmr, link);
         g_free(cmr);
+        updated = true;
+    }
+
+    if (updated) {
+        memory_region_update_coalesced_range(mr);
     }
-    memory_region_update_coalesced_range(mr);
 }
 
 void memory_region_set_flush_coalesced(MemoryRegion *mr)