optee: Use bitmap_free() to free bitmap

kfree() and bitmap_free() are the same. But using the latter is more
consistent when freeing memory allocated with bitmap_zalloc().

Signed-off-by: Christophe JAILLET <[email protected]>
Reviewed-by: Sumit Garg <[email protected]>
Signed-off-by: Jens Wiklander <[email protected]>

Author: tititiou36

drivers/tee/optee/notif.c

@@ -121,5 +121,5 @@ int optee_notif_init(struct optee *optee, u_int max_key)
 
 void optee_notif_uninit(struct optee *optee)
 {
-	kfree(optee->notif.bitmap);
+	bitmap_free(optee->notif.bitmap);
 }