diff --git a/kernel/dma/coherent.c b/kernel/dma/coherent.c
index b79d8d0433dd..49aaad3936f1 100644
--- a/kernel/dma/coherent.c
+++ b/kernel/dma/coherent.c
@@ -142,8 +142,10 @@ int dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr,
 
 void dma_release_coherent_memory(struct device *dev)
 {
-	if (dev)
+	if (dev) {
 		_dma_release_coherent_memory(dev->dma_mem);
+		dev->dma_mem = NULL;
+	}
 }
 
 static void *__dma_alloc_from_coherent(struct device *dev,