attr: Sort attributes after adding new ones

Sort attributes as soon as a new one has been added.

Signed-off-by: Paul Cercueil <[email protected]>

attr.c

@@ -7,6 +7,7 @@
  */
 
 #include "iio-private.h"
+#include "sort.h"
 
 #include <inttypes.h>
 #include <errno.h>
@@ -214,6 +215,8 @@ int iio_add_attr(union iio_pointer p, struct iio_attr_list *attrs,
 
 	attrs->num++;
 
+	iio_sort_attrs(attrs);
+
 	return 0;
 }