drm: encoder_slave: fix refcouting error for modules

module_put() balances try_module_get(), not request_module(). Fix the
error path to match that.

Fixes: 2066facca4c7 ("drm/kms: slave encoder interface.")
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200316163907.13709-2-wsa+renesas@sang-engineering.com

diff --git a/drivers/gpu/drm/drm_encoder_slave.c b/drivers/gpu/drm/drm_encoder_slave.c
index cf80438..d50a788 100644 (file)
--- a/drivers/gpu/drm/drm_encoder_slave.c
+++ b/drivers/gpu/drm/drm_encoder_slave.c
@@ -84,7 +84,7 @@ int drm_i2c_encoder_init(struct drm_device *dev,
 
        err = encoder_drv->encoder_init(client, dev, encoder);
        if (err)
-               goto fail_unregister;
+               goto fail_module_put;
 
        if (info->platform_data)
                encoder->slave_funcs->set_config(&encoder->base,
@@ -92,9 +92,10 @@ int drm_i2c_encoder_init(struct drm_device *dev,
 
        return 0;
 
+fail_module_put:
+       module_put(module);
 fail_unregister:
        i2c_unregister_device(client);
-       module_put(module);
 fail:
        return err;
 }