Fix loop iteration logic

Change-Id: I0b6c550ea2b4aafc12b1c35efef0eafd702fd5c7
diff --git a/security/test_bmc_connections.robot b/security/test_bmc_connections.robot
index c865308..ee55a58 100644
--- a/security/test_bmc_connections.robot
+++ b/security/test_bmc_connections.robot
@@ -133,7 +133,7 @@
 
     SSHLibrary.Open Connection  ${OPENBMC_HOST}
     @{ssh_status_list}=  Create List
-    FOR  ${iter}  IN RANGE  ${loop_iteration}
+    FOR  ${iter}  IN RANGE  ${1}  ${loop_iterations} + 1
       Log To Console  ${iter}th iteration
       ${invalid_password}=   Catenate  ${OPENBMC_PASSWORD}${iter}
       Run Keyword and Ignore Error