fix another init regression

This makes Beagle work again, instead of losing horribly because
the JTAG event handlers are no longer able to e.g. "runtest".  I
get the previous quirky behavior ... comes up OK but "reset halt"
somewhat mysteriously makes it all better.  (Instead of nothing
being able to work at all...)  However, I'm still seeing:

 The 'init' command must be used before 'init'.

That seems to come from invoking "jtag init", sometime after it
gets mapped to "ocd_jtag init", according to debug message traces.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

src/openocd.c

@@ -121,18 +121,21 @@ COMMAND_HANDLER(handle_init_command)
 	}
 	LOG_DEBUG("jtag interface init complete");
 
-	/* Try to initialize & examine the JTAG chain at this point, but
-	 * continue startup regardless */
+	/* Try to initialize & examine the JTAG chain at this point,
+	 * but continue startup regardless.  Note that platforms
+	 * need to be able to provide JTAG event handlers that use
+	 * a variety of JTAG operations in order to do that...
+	 */
+	command_context_mode(CMD_CTX, COMMAND_EXEC);
 	if (command_run_line(CMD_CTX, "jtag init") == ERROR_OK)
 	{
-		command_context_mode(CMD_CTX, COMMAND_EXEC);
 		LOG_DEBUG("Examining targets...");
 		if (target_examine() != ERROR_OK)
 			LOG_DEBUG("target examination failed");
-		command_context_mode(CMD_CTX, COMMAND_CONFIG);
 	}
 	else
 		LOG_WARNING("jtag initialization failed; try 'jtag init' again.");
+	command_context_mode(CMD_CTX, COMMAND_CONFIG);
 
 	if (command_run_line(CMD_CTX, "flash init") != ERROR_OK)
 		return ERROR_FAIL;