soc: aspeed: socinfo: Add kfree for kstrdup

Add kfree() in the later error handling in order to avoid memory leak.

Fixes: e0218dc ("soc: aspeed: Add soc info driver")
Signed-off-by: Jiasheng Jiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Joel Stanley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnd Bergmann <[email protected]>

drivers/soc/aspeed/aspeed-socinfo.c

@@ -137,6 +137,7 @@ static int __init aspeed_socinfo_init(void)
 
 	soc_dev = soc_device_register(attrs);
 	if (IS_ERR(soc_dev)) {
+		kfree(attrs->machine);
 		kfree(attrs->soc_id);
 		kfree(attrs->serial_number);
 		kfree(attrs);