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: Christophe JAILLET <[e-mail]>
Signed-off-by: Thierry Reding <[e-mail]>

drivers/gpu/drm/tegra/sor.c

···
 	brick->hw.init = &init;
 
 	clk = devm_clk_register(sor->dev, &brick->hw);
-	if (IS_ERR(clk))
-		kfree(brick);
 
 	return clk;
 }