clkdev: Don't print errors on probe defer

This error message can spam the logs if you have lots of probe
deferals due to missing clocks. Just silence the error in this
case because the driver should try again later.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

drivers/clk/clkdev.c

@@ -101,8 +101,9 @@ struct clk *of_clk_get_by_name(struct device_node *np, const char *name)
 		if (!IS_ERR(clk))
 			break;
 		else if (name && index >= 0) {
-			pr_err("ERROR: could not get clock %s:%s(%i)\n",
-				np->full_name, name ? name : "", index);
+			if (PTR_ERR(clk) != -EPROBE_DEFER)
+				pr_err("ERROR: could not get clock %s:%s(%i)\n",
+					np->full_name, name ? name : "", index);
 			return clk;
 		}