diff --git a/drivers/base/dma-contiguous.c b/drivers/base/dma-contiguous.c
index 6312bcd..2adcbbc 100644
--- a/drivers/base/dma-contiguous.c
+++ b/drivers/base/dma-contiguous.c
@@ -527,6 +527,7 @@
 			page = pfn_to_page(pfn);
 			break;
 		} else if (ret != -EBUSY) {
+			pfn = 0;
 			clear_cma_bitmap(cma, pfn, count);
 			break;
 		}