[PATCH] drm/exynos: fix err_cast.cocci warnings

[kernel test robot]

From: kernel test robot <lkp@xxxxxxxxx>

drivers/gpu/drm/bridge/samsung-dsim.c:1637:10-17: WARNING: ERR_CAST can be used with dsi -> clks [ i ]
drivers/gpu/drm/bridge/samsung-dsim.c:1651:9-16: WARNING: ERR_CAST can be used with dsi -> phy


 Use ERR_CAST inlined function instead of ERR_PTR(PTR_ERR(...))

Generated by: scripts/coccinelle/api/err_cast.cocci

CC: Michael Tretter <m.tretter@xxxxxxxxxxxxxx>
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: kernel test robot <lkp@xxxxxxxxx>
---

tree:   https://git.pengutronix.de/git/lst/linux imx8m-power-domains-testing
head:   743ce97bc237b4b97ffa933cd03f5a6c8b401384
commit: 0ce8e59076392e581e9b82892a973b17d55f136b [44/58] drm/exynos: move bridge driver to bridges
:::::: branch date: 5 hours ago
:::::: commit date: 5 hours ago

 samsung-dsim.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/bridge/samsung-dsim.c
+++ b/drivers/gpu/drm/bridge/samsung-dsim.c
@@ -1634,7 +1634,7 @@ static struct samsung_dsim *__samsung_ds
 
 			dev_info(dev, "failed to get the clock: %s\n",
 					clk_names[i]);
-			return ERR_PTR(PTR_ERR(dsi->clks[i]));
+			return ERR_CAST(dsi->clks[i]);
 		}
 	}
 
@@ -1648,7 +1648,7 @@ static struct samsung_dsim *__samsung_ds
 	dsi->phy = devm_phy_get(dev, "dsim");
 	if (IS_ERR(dsi->phy)) {
 		dev_info(dev, "failed to get dsim phy\n");
-		return ERR_PTR(PTR_ERR(dsi->phy));
+		return ERR_CAST(dsi->phy);
 	}
 
 	dsi->irq = platform_get_irq(pdev, 0);