clk: mvebu: armada-37xx-tbg: Remove the unneeded result variable

Return the value of_clk_add_hw_provider() directly instead of storing it
in another redundant variable.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Link: https://lore.kernel.org/r/20220906072322.337253-1-ye.xingchen@zte.com.cnSigned-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/mvebu/armada-37xx-tbg.c

@@ -87,7 +87,7 @@ static int armada_3700_tbg_clock_probe(struct platform_device *pdev)
 	struct resource *res;
 	struct clk *parent;
 	void __iomem *reg;
-	int i, ret;
+	int i;
 
 	hw_tbg_data = devm_kzalloc(&pdev->dev,
 				   struct_size(hw_tbg_data, hws, NUM_TBG),
@@ -123,9 +123,7 @@ static int armada_3700_tbg_clock_probe(struct platform_device *pdev)
 			dev_err(dev, "Can't register TBG clock %s\n", name);
 	}
 
-	ret = of_clk_add_hw_provider(np, of_clk_hw_onecell_get, hw_tbg_data);
-
-	return ret;
+	return of_clk_add_hw_provider(np, of_clk_hw_onecell_get, hw_tbg_data);
 }
 
 static int armada_3700_tbg_clock_remove(struct platform_device *pdev)