selftests/bpf: test_verifier verbose causes erroneous failures

When running test_verifier with the -v flag and a test with
`expected_ret==VERBOSE_ACCEPT`, the opts.log_level is unintentionally
overwritten because the verbose flag takes precedence. This leads to
a mismatch in the expected and actual contents of bpf_vlog, causing
tests to fail incorrectly.

Reorder the conditional logic that sets opts.log_level to preserve
the expected log level and prevent it from being overridden by -v.

Signed-off-by: Gregory Bell <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Alexei Starovoitov <[e-mail]>

tools/testing/selftests/bpf/test_verifier.c

···
 		       test->errstr_unpriv : test->errstr;
 
 	opts.expected_attach_type = test->expected_attach_type;
-	if (verbose)
-		opts.log_level = verif_log_level | 4; /* force stats */
-	else if (expected_ret == VERBOSE_ACCEPT)
+	if (expected_ret == VERBOSE_ACCEPT)
 		opts.log_level = 2;
+	else if (verbose)
+		opts.log_level = verif_log_level | 4; /* force stats */
 	else
 		opts.log_level = DEFAULT_LIBBPF_LOG_LEVEL;
 	opts.prog_flags = pflags;