[PATCH] drm/panel: boe-tv101wum-nl6: Fix errors cases handling in prepare function

[Benjamin Gaignard]

Make sure that pp3300 regulator and enable gpio are cleaned before
leave in error cases.

Fixes: 18c58153b8c62 ("drm/panel: boe-tv101wum-nl6: Support enabling a 3.3V 
rail")
Signed-off-by: Benjamin Gaignard <benjamin.gaign...@collabora.com>
---
 drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c 
b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
index 5fcbde789ddb..382a17bb96d8 100644
--- a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
+++ b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
@@ -1245,11 +1245,11 @@ static int boe_panel_prepare(struct drm_panel *panel)
 
        ret = regulator_enable(boe->pp3300);
        if (ret < 0)
-               return ret;
+               goto disablegpio;
 
        ret = regulator_enable(boe->pp1800);
        if (ret < 0)
-               return ret;
+               goto poweroff3v3;
 
        usleep_range(3000, 5000);
 
@@ -1286,6 +1286,9 @@ static int boe_panel_prepare(struct drm_panel *panel)
 poweroff1v8:
        usleep_range(5000, 7000);
        regulator_disable(boe->pp1800);
+poweroff3v3:
+       regulator_disable(boe->pp3300);
+disablegpio:
        gpiod_set_value(boe->enable_gpio, 0);
 
        return ret;
-- 
2.32.0