Staging: iio: Remove unnecessory immediate else after return statement

This patch fixes following checkpatch.pl warning:

WARNING: else is not generally useful after a break or return
Signed-off-by: NVaishali Thakkar <vthakkar1994@gmail.com>
Acked-by: NDaniel Baluta <daniel.baluta@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/iio/adc/ad7816.c

@@ -118,8 +118,7 @@ static ssize_t ad7816_show_mode(struct device *dev,
 
 	if (chip->mode)
 		return sprintf(buf, "power-save\n");
-	else
-		return sprintf(buf, "full\n");
+	return sprintf(buf, "full\n");
 }
 
 static ssize_t ad7816_store_mode(struct device *dev,
@@ -226,8 +225,8 @@ static ssize_t ad7816_show_value(struct device *dev,
 		if (value < 0)
 			data = (1 << AD7816_TEMP_FLOAT_OFFSET) - data;
 		return sprintf(buf, "%d.%.2d\n", value, data * 25);
-	} else
-		return sprintf(buf, "%u\n", data);
+	}
+	return sprintf(buf, "%u\n", data);
 }
 
 static IIO_DEVICE_ATTR(value, S_IRUGO, ad7816_show_value, NULL, 0);
@@ -275,8 +274,8 @@ static ssize_t ad7816_show_oti(struct device *dev,
 			(chip->oti_data[chip->channel_id] -
 			AD7816_BOUND_VALUE_BASE);
 		return sprintf(buf, "%d\n", value);
-	} else
-		return sprintf(buf, "%u\n", chip->oti_data[chip->channel_id]);
+	}
+	return sprintf(buf, "%u\n", chip->oti_data[chip->channel_id]);
 }
 
 static inline ssize_t ad7816_set_oti(struct device *dev,