clk: xgene: Remove return from void function

This function doesn't return anything because it's void. Drop the
return statement.

Cc: Loc Ho <lho@apm.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
diff --git a/drivers/clk/clk-xgene.c b/drivers/clk/clk-xgene.c
index 266d573..bd7156b 100644
--- a/drivers/clk/clk-xgene.c
+++ b/drivers/clk/clk-xgene.c
@@ -50,7 +50,7 @@
 
 static inline void xgene_clk_write(u32 data, void __iomem *csr)
 {
-	return writel_relaxed(data, csr);
+	writel_relaxed(data, csr);
 }
 
 /* PLL Clock */