KeyMint VTS: Expect empty key if boot state unverfied

Bug: 221128605
Test: VtsAidlKeyMintTargetTest
Change-Id: Icbf0ccf57245b2eef559a119087e15cd883239f5
diff --git a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
index ff4036c..58d22dc 100644
--- a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
+++ b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
@@ -1544,7 +1544,7 @@
         EXPECT_EQ(verified_boot_state, VerifiedBoot::FAILED);
     } else {
         EXPECT_EQ(verified_boot_state, VerifiedBoot::UNVERIFIED);
-        EXPECT_NE(0, memcmp(verified_boot_key.data(), empty_boot_key.data(),
+        EXPECT_EQ(0, memcmp(verified_boot_key.data(), empty_boot_key.data(),
                             verified_boot_key.size()));
     }