drm/tegra: sor: No need to free devm_ allocated memory

Memory for the brick clock is allocated by devm_kzalloc(), so there is
no need here to free it explicitly.

The only function that calls tegra_clk_sor_brick_register() is the probe
function and it correctly checks and handles the return value, which, on
failure, will cause devm_ allocated memory to be freed automatically.
Signed-off-by: NChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: NThierry Reding <treding@nvidia.com>

drivers/gpu/drm/tegra/sor.c

@@ -349,8 +349,6 @@ static struct clk *tegra_clk_sor_brick_register(struct tegra_sor *sor,
 	brick->hw.init = &init;
 
 	clk = devm_clk_register(sor->dev, &brick->hw);
-	if (IS_ERR(clk))
-		kfree(brick);
 
 	return clk;
 }