staging: rtl8192e: rtllib_module: fix error handle case in alloc_rtllib()

staging: rtl8192e: rtllib_module: fix error handle case in alloc_rtllib()

Some variables are leaked in the error handling in alloc_rtllib(), free
the variables in the error path.

Fixes: 94a799425eee ("From: wlanfae <wlanfae@realtek.com>")
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20211202030704.2425621-3-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>