boot: Use provided filename with bootmeth_alloc_other()

Rather than using bflow->fname, which assumes that it is the same as the
passed-in filename, use the passed in filename. This can be different in
some cases.

Signed-off-by: Simon Glass <sjg@chromium.org>

boot/bootmeth-uclass.c

@@ -388,8 +388,7 @@ int bootmeth_alloc_other(struct bootflow *bflow, const char *fname,
 	if (ret)
 		return log_msg_ret("all", ret);
 
-	if (!bootflow_img_add(bflow, bflow->fname, type, abuf_addr(buf),
-			      size))
+	if (!bootflow_img_add(bflow, fname, type, abuf_addr(buf), size))
 		return log_msg_ret("boi", -ENOMEM);
 
 	return 0;