media: vidtv: psi: Add check for kstrdup

stable inclusion
from stable-v6.6.2
commit a51335704a3f90eaf23a6864faefca34b382490a
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8IW7G

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=a51335704a3f90eaf23a6864faefca34b382490a



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[ Upstream commit 76a2c5df6ca8bd8ada45e953b8c72b746f42918d ]

Add check for the return value of kstrdup() and return the error
if it fails in order to avoid NULL pointer dereference.

Fixes: 7a7899f6 ("media: vidtv: psi: Implement an Event Information Table (EIT)")
Fixes: c2f78f0c ("media: vidtv: psi: add a Network Information Table (NIT)")
Fixes: f90cf607 ("media: vidtv: add a bridge driver")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>