iio: admv1013: replace redundant ternary operator with just len

The variable ret is being assigned a return value and non-zero error
return paths are taken at all stages. At the end of the function ret
is always zero, so the ternary operator checking for zero ret is
redundant and can be replaced with just len instead.

Signed-off-by: Colin Ian King <[email protected]>
Reviewed-by: David Lechner <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jonathan Cameron <[email protected]>

Author: ColinIanKing

drivers/iio/frequency/admv1013.c

@@ -319,7 +319,7 @@ static ssize_t admv1013_write(struct iio_dev *indio_dev,
 		return -EINVAL;
 	}
 
-	return ret ? ret : len;
+	return len;
 }
 
 static int admv1013_update_quad_filters(struct admv1013_state *st)