crypto: inside-secure - Add missed clk_disable_unprepare

safexcel_remove misses disabling priv->reg_clk like what is done when
probe fails.
Add the missed call to fix it.
Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/inside-secure/safexcel.c

@@ -1749,6 +1749,7 @@ static int safexcel_remove(struct platform_device *pdev)
 	safexcel_unregister_algorithms(priv);
 	safexcel_hw_reset_rings(priv);
 
+	clk_disable_unprepare(priv->reg_clk);
 	clk_disable_unprepare(priv->clk);
 
 	for (i = 0; i < priv->config.rings; i++)