hwmon: (f75375s) Fix warning message seen in some configurations

In some configurations, BUG() does not result in an endless loop but returns to
the caller. This results in the following compiler warning:

drivers/hwmon/f75375s.c: In function 'duty_mode_enabled':
drivers/hwmon/f75375s.c:280: warning: control reaches end of non-void function
drivers/hwmon/f75375s.c: In function 'auto_mode_enabled':
drivers/hwmon/f75375s.c:295: warning: control reaches end of non-void function

Fix the warning by returning something sensible after BUG().

Cc: Nikolaus Schulz <[email protected]>
Cc: Riku Voipio <[email protected]>
Signed-off-by: Guenter Roeck <[email protected]>
Acked-by: Jean Delvare <[email protected]>
Signed-off-by: Guenter Roeck <[email protected]>

drivers/hwmon/f75375s.c

@@ -276,6 +276,7 @@ static bool duty_mode_enabled(u8 pwm_enable)
 		return false;
 	default:
 		BUG();
+		return true;
 	}
 }
 
@@ -291,6 +292,7 @@ static bool auto_mode_enabled(u8 pwm_enable)
 		return true;
 	default:
 		BUG();
+		return false;
 	}
 }