selftests: Fix the if conditions of in test_extra_filter()

The socket 2 bind the addr in use, bind should fail with EADDRINUSE. So
if bind success or errno != EADDRINUSE, testcase should be failed.

Fixes: 3ca8e40 ("soreuseport: BPF selection functional test")
Signed-off-by: Wang Yufen <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Paolo Abeni <[email protected]>

Author: wangyufen316

tools/testing/selftests/net/reuseport_bpf.c

@@ -328,7 +328,7 @@ static void test_extra_filter(const struct test_params p)
 	if (bind(fd1, addr, sockaddr_size()))
 		error(1, errno, "failed to bind recv socket 1");
 
-	if (!bind(fd2, addr, sockaddr_size()) && errno != EADDRINUSE)
+	if (!bind(fd2, addr, sockaddr_size()) || errno != EADDRINUSE)
 		error(1, errno, "bind socket 2 should fail with EADDRINUSE");
 
 	free(addr);