staging: rtl8723bs: Fix a resource leak in sd_int_dpc

stable inclusion
from stable-5.10.58
commit 369101e399117a4019d3ee3c03318f820a9d7745
bugzilla: 176984 https://gitee.com/openeuler/kernel/issues/I4E2P4

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=369101e399117a4019d3ee3c03318f820a9d7745



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

commit 990e4ad3 upstream.

The "c2h_evt" variable is not freed when function call
"c2h_evt_read_88xx" failed

Fixes: 554c0a3a ("staging: Add rtl8723bs sdio wifi driver")
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Xiangyang Zhang <xyz.sun.ok@gmail.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210628152239.5475-1-xyz.sun.ok@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Chen Jun <chenjun102@huawei.com>
Acked-by: Weilong Chen <chenweilong@huawei.com>
Signed-off-by: Chen Jun <chenjun102@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>