[bootlin/training-materials updates] master: kernel-device-model: Fix wording in example (36519671)

[Miquel Raynal]

Repository : https://github.com/bootlin/training-materials
On branch  : master
Link       : https://github.com/bootlin/training-materials/commit/3651967167fda9d91250ddf5fad66a60ac1b98d7

>---------------------------------------------------------------

commit 3651967167fda9d91250ddf5fad66a60ac1b98d7
Author: Miquel Raynal <miquel.raynal at bootlin.com>
Date:   Tue Oct 11 17:11:41 2022 +0200

    kernel-device-model: Fix wording in example
    
    Signed-off-by: Miquel Raynal <miquel.raynal at bootlin.com>


>---------------------------------------------------------------

3651967167fda9d91250ddf5fad66a60ac1b98d7
 slides/kernel-device-model/kernel-device-model.tex | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/slides/kernel-device-model/kernel-device-model.tex b/slides/kernel-device-model/kernel-device-model.tex
index a306b11d..383e260e 100644
--- a/slides/kernel-device-model/kernel-device-model.tex
+++ b/slides/kernel-device-model/kernel-device-model.tex
@@ -425,7 +425,7 @@ static struct platform_driver serial_imx_driver = {
   \begin{block}{}
   \begin{minted}[fontsize=\scriptsize]{c}
 static int __init imx_serial_init(void) {
-    ret = platform_driver_register(&serial_imx_driver);
+    return platform_driver_register(&serial_imx_driver);
 }
 
 static void __exit imx_serial_cleanup(void) {