tipc: check return value of __tipc_dump_start()
When __tipc_dump_start() fails with running out of memory, we have no reason to continue, especially we should avoid calling tipc_dump_done(). Fixes: 8f5c5fcf ("tipc: call start and done ops directly in __tipc_nl_compat_dumpit()") Reported-and-tested-by: syzbot+3f8324abccfbf8c74a9f@syzkaller.appspotmail.com Cc: Jon Maloy <jon.maloy@ericsson.com> Cc: Ying Xue <ying.xue@windriver.com> Signed-off-by: NCong Wang <xiyou.wangcong@gmail.com> Acked-by: NYing Xue <ying.xue@windriver.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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