dlm: Delete an unnecessary variable initialisation in dlm_ls_start()

The local variable "rv" is reassigned by a statement at the beginning.
Thus omit the explicit initialisation.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: David Teigland <teigland@redhat.com>

fs/dlm/member.c

@@ -670,7 +670,7 @@ int dlm_ls_stop(struct dlm_ls *ls)
 
 int dlm_ls_start(struct dlm_ls *ls)
 {
-	struct dlm_recover *rv = NULL, *rv_old;
+	struct dlm_recover *rv, *rv_old;
 	struct dlm_config_node *nodes;
 	int error, count;