diff --git a/fs/pstore/ram_core.c b/fs/pstore/ram_core.c
index 792735c08af7..91cfcc6561e9 100644
--- a/fs/pstore/ram_core.c
+++ b/fs/pstore/ram_core.c
@@ -475,6 +475,10 @@ static void *persistent_ram_iomap(phys_addr_t start, size_t size,
 	else
 		va = ioremap_wc(start, size);
 
+	/* We must release the mem region if ioremap fails. */
+	if (!va)
+		release_mem_region(start, size);
+
 	/*
 	 * Since request_mem_region() and ioremap() are byte-granularity
 	 * there is no need handle anything special like we do when the