dump: allocate task cores in collect_task() instead of parasite_infect_seized()

We need it to be able to dump signals into cores
before calling parasite_infect_seized().
Signed-off-by: Ruslan Kuprieiev <kupruser@gmail.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

cr-dump.c

@@ -1014,6 +1014,9 @@ static int collect_task(struct pstree_item *item)
 		goto err_close;
 	}
 
+	if (pstree_alloc_cores(item))
+		goto err_close;
+
 	close_pid_proc();
 
 	pr_info("Collected %d in %d state\n", item->pid.real, item->state);

parasite-syscall.c

@@ -1160,9 +1160,6 @@ struct parasite_ctl *parasite_infect_seized(pid_t pid, struct pstree_item *item,
 
 	BUG_ON(item->threads[0].real != pid);
 
-	if (pstree_alloc_cores(item))
-		return NULL;
-
 	ctl = parasite_prep_ctl(pid, vma_area_list);
 	if (!ctl)
 		return NULL;