media: stm32: dcmipp: correct error handling in dcmipp_create_subdevs

Correct error handling within the dcmipp_create_subdevs by properly
decrementing the i counter when releasing the subdevs.

Fixes: 28e0f3772296 ("media: stm32-dcmipp: STM32 DCMIPP camera interface driver")
Cc: [e-mail]
Signed-off-by: Alain Volmat <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>
Acked-by: Sakari Ailus <[e-mail]>
[hverkuil: correct the indices: it's [i], not [i - 1].]

drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c

···
 	return 0;
 
 err_init_entity:
-	while (i > 0)
-		dcmipp->pipe_cfg->ents[i - 1].release(dcmipp->entity[i - 1]);
+	while (i-- > 0)
+		dcmipp->pipe_cfg->ents[i].release(dcmipp->entity[i]);
 	return ret;
 }