[PATCH] drm/sun4i: tcon-top: Fix return type warning

[Maxime Ripard]

When commit af11942ee44e ("drm/sun4i: tcon-top: Cleanup clock handling")
was merged, the error handling path of the of_property_match_string was
changed to take into account the fact that the returned value of that
function wasn't an error pointer but an error code.

Unfortunately, this introduced a warning since the now returned value is an
integer, while the sun8i_tcon_top_register_gate function should return an
error pointer.

Fix that by calling ERR_PTR.

Cc: Jernej Skrabec <jernej.skrabec at siol.net>
Cc: Chen-Yu Tsai <wens at csie.org>
Fixes: af11942ee44e ("drm/sun4i: tcon-top: Cleanup clock handling")
Reported-by: kbuild test robot <lkp at intel.com>
Reported-by: Stephen Rothwell <sfr at canb.auug.org.au>
Signed-off-by: Maxime Ripard <maxime.ripard at bootlin.com>
---
 drivers/gpu/drm/sun4i/sun8i_tcon_top.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/sun4i/sun8i_tcon_top.c b/drivers/gpu/drm/sun4i/sun8i_tcon_top.c
index 046f8dd66f90..55fe398d8290 100644
--- a/drivers/gpu/drm/sun4i/sun8i_tcon_top.c
+++ b/drivers/gpu/drm/sun4i/sun8i_tcon_top.c
@@ -99,7 +99,7 @@ static struct clk_hw *sun8i_tcon_top_register_gate(struct device *dev,
 
 	index = of_property_match_string(dev->of_node, "clock-names", parent);
 	if (index < 0)
-		return index;
+		return ERR_PTR(index);
 
 	parent_name = of_clk_get_parent_name(dev->of_node, index);
 
-- 
2.17.1