tun: Fix xdp_rxq_info's queue_index when detaching

stable inclusion
from stable-v4.19.309
commit 32793f71f212db99560816a0916ff060e46dfc6f
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I9GV9R
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=32793f71f212db99560816a0916ff060e46dfc6f



--------------------------------

[ Upstream commit 2a770cdc4382b457ca3d43d03f0f0064f905a0d0 ]

When a queue(tfile) is detached, we only update tfile's queue_index,
but do not update xdp_rxq_info's queue_index. This patch fixes it.

Fixes: 8bf5c4ee ("tun: setup xdp_rxq_info")
Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
Link: https://lore.kernel.org/r/1708398727-46308-1-git-send-email-wangyunjian@huawei.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Dong Chenchen <dongchenchen2@huawei.com>