drm/bridge: ti-sn65dsi83: Fix enable error path

If PLL locking failed, the regulator needs to be disabled again.

Fixes: 5664e3c ("drm/bridge: ti-sn65dsi83: Add vcc supply regulator support")
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230504065316.2640739-1-alexander.stein@ew.tq-group.com

drivers/gpu/drm/bridge/ti-sn65dsi83.c

@@ -478,6 +478,7 @@ static void sn65dsi83_atomic_enable(struct drm_bridge *bridge,
  dev_err(ctx->dev, "failed to lock PLL, ret=%i\n", ret);
  /* On failure, disable PLL again and exit. */
  regmap_write(ctx->regmap, REG_RC_PLL_EN, 0x00);
+ regulator_disable(ctx->vcc);
  return;
  }