[WATCHDOG] Stop looking for device as soon as one is found

If no address is given for the W83697HF/HG watchdog IO port, stop looping
through possible locations when a watchdog device has been found.
Signed-off-by: NSamuel Tardieu <sam@rfc1149.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

drivers/watchdog/w83697hf_wdt.c

@@ -382,8 +382,10 @@ wdt_init(void)
 		/* we will autodetect the W83697HF/HG watchdog */
 		for (i = 0; ((!found) && (w83697hf_ioports[i] != 0)); i++) {
 			wdt_io = w83697hf_ioports[i];
-			if (!w83697hf_check_wdt())
+			if (!w83697hf_check_wdt()) {
 				found++;
+				break;
+			}
 		}
 	} else {
 		if (!w83697hf_check_wdt())