[TIPC] net/tipc/port.c: fix NULL dereference
The correct order is: NULL check before dereference Spotted by the Coverity checker. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -1136,11 +1136,12 @@ int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq)
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int res = -EINVAL;
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p_ptr = tipc_port_lock(ref);
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if (!p_ptr)
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return -EINVAL;
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dbg("tipc_publ %u, p_ptr = %x, conn = %x, scope = %x, "
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"lower = %u, upper = %u\n",
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ref, p_ptr, p_ptr->publ.connected, scope, seq->lower, seq->upper);
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if (!p_ptr)
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return -EINVAL;
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if (p_ptr->publ.connected)
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goto exit;
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if (seq->lower > seq->upper)
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