clk: Simplify clk_is_match()

Linux style is to handle early-on failure.  Inverting the first
condition lets us simplify the second, and improves readability.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Brian Masney <bmasney@redhat.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Author: geertu

drivers/clk/clk.c

@@ -3259,11 +3259,10 @@ bool clk_is_match(const struct clk *p, const struct clk *q)
 		return true;
 
 	/* true if clk->core pointers match. Avoid dereferencing garbage */
-	if (!IS_ERR_OR_NULL(p) && !IS_ERR_OR_NULL(q))
-		if (p->core == q->core)
-			return true;
+	if (IS_ERR_OR_NULL(p) || IS_ERR_OR_NULL(q))
+		return false;
 
-	return false;
+	return p->core == q->core;
 }
 EXPORT_SYMBOL_GPL(clk_is_match);