can: usb_8dev: usb_8dev_start_xmit(): fix double dev_kfree_skb() in error path

stable inclusion
from stable-v5.10.110
commit 5318cdf4fd834856ce71238b064f35386f9ef528
category: bugfix
bugzilla: 186592 https://gitee.com/src-openeuler/kernel/issues/I51YBQ?from=project-issue
CVE: CVE-2022-28388

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=5318cdf4fd834856ce71238b064f35386f9ef528

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

commit 3d3925ff upstream.

There is no need to call dev_kfree_skb() when usb_submit_urb() fails
because can_put_echo_skb() deletes original skb and
can_free_echo_skb() deletes the cloned skb.

Fixes: 0024d8ad ("can: usb_8dev: Add support for USB2CAN interface from 8 devices")
Link: https://lore.kernel.org/all/20220311080614.45229-1-hbh25y@gmail.com


Cc: stable@vger.kernel.org
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ziyang Xuan <william.xuanziyang@huawei.com>
Reviewed-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>