clk: ti: Don't reference clk_init_data after registration

A future patch is going to change semantics of clk_register() so that
clk_hw::init is guaranteed to be NULL after a clk is registered. Avoid
referencing this member here so that we don't run into NULL pointer
exceptions.

Cc: Tero Kristo <t-kristo@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Reported-by: "kernelci.org bot" <bot@kernelci.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lkml.kernel.org/r/20190815221249.53235-1-sboyd@kernel.org

drivers/clk/ti/apll.c

@@ -140,6 +140,7 @@ static void __init omap_clk_register_apll(void *user,
 	struct clk_hw_omap *clk_hw = to_clk_hw_omap(hw);
 	struct dpll_data *ad = clk_hw->dpll_data;
 	struct clk *clk;
+	const struct clk_init_data *init = clk_hw->hw.init;
 
 	clk = of_clk_get(node, 0);
 	if (IS_ERR(clk)) {
@@ -168,15 +169,15 @@ static void __init omap_clk_register_apll(void *user,
 	clk = ti_clk_register_omap_hw(NULL, &clk_hw->hw, node->name);
 	if (!IS_ERR(clk)) {
 		of_clk_add_provider(node, of_clk_src_simple_get, clk);
-		kfree(clk_hw->hw.init->parent_names);
-		kfree(clk_hw->hw.init);
+		kfree(init->parent_names);
+		kfree(init);
 		return;
 	}
 
 cleanup:
 	kfree(clk_hw->dpll_data);
-	kfree(clk_hw->hw.init->parent_names);
-	kfree(clk_hw->hw.init);
+	kfree(init->parent_names);
+	kfree(init);
 	kfree(clk_hw);
 }
 

drivers/clk/ti/dpll.c

@@ -165,6 +165,7 @@ static void __init _register_dpll(void *user,
 	struct clk_hw_omap *clk_hw = to_clk_hw_omap(hw);
 	struct dpll_data *dd = clk_hw->dpll_data;
 	struct clk *clk;
+	const struct clk_init_data *init = hw->init;
 
 	clk = of_clk_get(node, 0);
 	if (IS_ERR(clk)) {
@@ -196,15 +197,15 @@ static void __init _register_dpll(void *user,
 
 	if (!IS_ERR(clk)) {
 		of_clk_add_provider(node, of_clk_src_simple_get, clk);
-		kfree(clk_hw->hw.init->parent_names);
-		kfree(clk_hw->hw.init);
+		kfree(init->parent_names);
+		kfree(init);
 		return;
 	}
 
 cleanup:
 	kfree(clk_hw->dpll_data);
-	kfree(clk_hw->hw.init->parent_names);
-	kfree(clk_hw->hw.init);
+	kfree(init->parent_names);
+	kfree(init);
 	kfree(clk_hw);
 }