IIO: Documentation: iio_utils: style consistency fix

No functional changes
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/iio/Documentation/iio_utils.h

@@ -374,7 +374,7 @@ inline int build_channel_array(const char *device_dir,
 		}
 	}
 	/* reorder so that the array is in index order*/
-	current = malloc(sizeof(**ci_array)**counter);
+	current = malloc(sizeof(**ci_array)*(*counter));
 	if (current == NULL) {
 		ret = -ENOMEM;
 		goto error_cleanup_array;