clk: fixed-rate: fix of_node_get-put imbalance

When the fixed rate clock is created by devicetree,
of_clk_add_provider is called. Add a call to
of_clk_del_provider in the remove function to balance
it out.

Signed-off-by: Alan Tull <[e-mail]>
Fixes: 435779fe1336 ("clk: fixed-rate: Convert into a module platform driver")
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/clk-fixed-rate.c

···
 {
 	struct clk *clk = platform_get_drvdata(pdev);
 
+	of_clk_del_provider(pdev->dev.of_node);
 	clk_unregister_fixed_rate(clk);
 
 	return 0;