clk: zynqmp: Check the return type

Currently the return value of of_clk_add_hw_provider is ignored.
lets check and return value.
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Link: https://lore.kernel.org/r/20210818065929.12835-2-shubhrajyoti.datta@xilinx.comSigned-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/zynqmp/clkc.c

@@ -762,9 +762,7 @@ static int zynqmp_clk_setup(struct device_node *np)
 	zynqmp_register_clocks(np);
 
 	zynqmp_data->num = clock_max_idx;
-	of_clk_add_hw_provider(np, of_clk_hw_onecell_get, zynqmp_data);
-
-	return 0;
+	return of_clk_add_hw_provider(np, of_clk_hw_onecell_get, zynqmp_data);
 }
 
 static int zynqmp_clock_probe(struct platform_device *pdev)