drm/sun4i: dsi: delete unnecessary IS_ERR() checks

The "dsi->bus_clk" pointer cannot be an error pointer at this point.
The check is confusing and unnecessary.  Delete it.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/YmqH71MtoGn2AXUg@kili

diff --git a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
index 527c7b2..b4dfa16 100644 (file)
--- a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
+++ b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
@@ -1193,8 +1193,8 @@ err_remove_dsi_host:
 err_unprotect_clk:
        clk_rate_exclusive_put(dsi->mod_clk);
 err_attach_clk:
-       if (!IS_ERR(dsi->bus_clk))
-               regmap_mmio_detach_clk(dsi->regs);
+       regmap_mmio_detach_clk(dsi->regs);
+
        return ret;
 }
 
@@ -1207,8 +1207,7 @@ static int sun6i_dsi_remove(struct platform_device *pdev)
        mipi_dsi_host_unregister(&dsi->host);
        clk_rate_exclusive_put(dsi->mod_clk);
 
-       if (!IS_ERR(dsi->bus_clk))
-               regmap_mmio_detach_clk(dsi->regs);
+       regmap_mmio_detach_clk(dsi->regs);
 
        return 0;
 }