mtd: parsers: Fix potential memory leak in mtd_parser_tplink_safeloader_parse()

The parts needs to be freed with all its elements, otherwise it will be
leaked.

Fixes: 00a3588 ("mtd: parsers: add TP-Link SafeLoader partitions table parser")
Signed-off-by: Yuan Can <yuancan@huawei.com>
Reviewed-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20221208113620.78855-1-yuancan@huawei.com

Author: Yuan Can

drivers/mtd/parsers/tplink_safeloader.c

@@ -91,7 +91,7 @@ static int mtd_parser_tplink_safeloader_parse(struct mtd_info *mtd,
 	buf = mtd_parser_tplink_safeloader_read_table(mtd);
 	if (!buf) {
 		err = -ENOENT;
-		goto err_out;
+		goto err_free_parts;
 	}
 
 	for (idx = 0, offset = TPLINK_SAFELOADER_DATA_OFFSET;
@@ -118,6 +118,8 @@ static int mtd_parser_tplink_safeloader_parse(struct mtd_info *mtd,
 err_free:
 	for (idx -= 1; idx >= 0; idx--)
 		kfree(parts[idx].name);
+err_free_parts:
+	kfree(parts);
 err_out:
 	return err;
 };