cifs: add check for returning value of SMB2_close_init

stable inclusion
from stable-v5.10.156
commit 3aeb13bc3db2400285eef9002af6e45f93f84d6a
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7MCG1

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=3aeb13bc3db2400285eef9002af6e45f93f84d6a



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[ Upstream commit d520de6c ]

If the returning value of SMB2_close_init is an error-value,
exit the function.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 352d96f3 ("cifs: multichannel: move channel selection above transport layer")

Signed-off-by: Anastasia Belova <abelova@astralinux.ru>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>