factory: Fix no-else-return pylint error

BUG=chromium:999876
TEST=make lint

Change-Id: I824e504feabbc04a16e4891ba5d1bd8852fd5ebd
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/factory/+/1991292
Commit-Queue: Yilin Yang (kerker) <kerker@chromium.org>
Tested-by: Yilin Yang (kerker) <kerker@chromium.org>
Auto-Submit: Yilin Yang (kerker) <kerker@chromium.org>
Reviewed-by: Yong Hong <yhong@chromium.org>
diff --git a/py/tools/ovl.py b/py/tools/ovl.py
index 8bc40a1..77932f2 100755
--- a/py/tools/ovl.py
+++ b/py/tools/ovl.py
@@ -431,9 +431,8 @@
         if self._state.ssl_self_signed:
           return ('SSLCertificateChanged', ssl.get_server_certificate(
               (self._state.host, self._state.port)))
-        else:
-          return ('SSLVerifyFailed', ssl.get_server_certificate(
-              (self._state.host, self._state.port)))
+        return ('SSLVerifyFailed', ssl.get_server_certificate(
+            (self._state.host, self._state.port)))
 
     try:
       self._state.ssl = tls_enabled