hw/block/nvme: update nsid when registered

If the user does not specify an nsid parameter on the nvme-ns device,
nvme_register_namespace will find the first free namespace id and assign
that.

This fix makes sure the assigned id is saved.

Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Reviewed-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>

hw/block/nvme.c

@@ -2578,7 +2578,7 @@ int nvme_register_namespace(NvmeCtrl *n, NvmeNamespace *ns, Error **errp)
         for (int i = 1; i <= n->num_namespaces; i++) {
             NvmeNamespace *ns = nvme_ns(n, i);
             if (!ns) {
-                nsid = i;
+                nsid = ns->params.nsid = i;
                 break;
             }
         }