diff --git a/drivers/nvdimm/claim.c b/drivers/nvdimm/claim.c
index 2e96b34bc936..fb667bf469c7 100644
--- a/drivers/nvdimm/claim.c
+++ b/drivers/nvdimm/claim.c
@@ -278,6 +278,7 @@ static int nsio_rw_bytes(struct nd_namespace_common *ndns,
 			return -EIO;
 		if (memcpy_mcsafe(buf, nsio->addr + offset, size) != 0)
 			return -EIO;
+		return 0;
 	}
 
 	if (unlikely(is_bad_pmem(&nsio->bb, sector, sz_align))) {