staging: media: lirc: remove unnecessary break after return

This patch fixes checkpatch.pl warning in lirc_serial.c file
WARNING : break is not useful after goto or return
Signed-off-by: Tapasweni Pathak <tapaswenipathak@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/media/lirc/lirc_serial.c

@@ -948,7 +948,6 @@ static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
 
 	case LIRC_GET_LENGTH:
 		return -ENOIOCTLCMD;
-		break;
 
 	case LIRC_SET_SEND_DUTY_CYCLE:
 		dprintk("SET_SEND_DUTY_CYCLE\n");
@@ -961,7 +960,6 @@ static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
 		if (value <= 0 || value > 100)
 			return -EINVAL;
 		return init_timing_params(value, freq);
-		break;
 
 	case LIRC_SET_SEND_CARRIER:
 		dprintk("SET_SEND_CARRIER\n");
@@ -974,7 +972,6 @@ static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
 		if (value > 500000 || value < 20000)
 			return -EINVAL;
 		return init_timing_params(duty_cycle, value);
-		break;
 
 	default:
 		return lirc_dev_fop_ioctl(filep, cmd, arg);