The sysfs_get_enabled() opened file processor not closed,
may cause a file handle leak.
Putting error handling and resource cleanup code together
makes the code easy to maintain and read.
Removed the unnecessary else if branch from the original
function, as it should return an error in cases other than '0'.
Signed-off-by: NHao Zeng <zenghao@kylinos.cn>
Suggested-by: NShuah Khan <skhan@linuxfoundation.org>
Signed-off-by: NShuah Khan <skhan@linuxfoundation.org>