Just for consistency, following the example documented since
commit e3fe3988d7 ("error: Document Error API usage rules"),
return a boolean value indicating an error is set or not.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 block/nvme.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/block/nvme.c b/block/nvme.c
index 95f19e12cd6..95f8f8b360b 100644
--- a/block/nvme.c
+++ b/block/nvme.c
@@ -496,9 +496,11 @@ static int nvme_cmd_sync(BlockDriverState *bs, NVMeQueuePair *q,
     return ret;
 }
 
-static void nvme_identify(BlockDriverState *bs, int namespace, Error **errp)
+/* Returns true on success, false on failure. */
+static bool nvme_identify(BlockDriverState *bs, int namespace, Error **errp)
 {
     BDRVNVMeState *s = bs->opaque;
+    bool ret = false;
     union {
         NvmeIdCtrl ctrl;
         NvmeIdNs ns;
@@ -575,10 +577,13 @@ static void nvme_identify(BlockDriverState *bs, int namespace, Error **errp)
         goto out;
     }
 
+    ret = true;
     s->blkshift = lbaf->ds;
 out:
     qemu_vfio_dma_unmap(s->vfio, id);
     qemu_vfree(id);
+
+    return ret;
 }
 
 static bool nvme_poll_queue(NVMeQueuePair *q)
-- 
2.26.2