spi: ti_qspi: Fix compiler warning when DEBUG macro is set

clk_div is uninitialized at the beginning of ti_spi_set_speed(), move
debug() print after clk_div calculation to avoid compiler warning and to
have proper value of clk_div printed during debugging.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>
Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>

drivers/spi/ti_qspi.c

@@ -110,13 +110,13 @@ static void ti_spi_set_speed(struct ti_qspi_priv *priv, uint hz)
 {
 	uint clk_div;
 
-	debug("ti_spi_set_speed: hz: %d, clock divider %d\n", hz, clk_div);
-
 	if (!hz)
 		clk_div = 0;
 	else
 		clk_div = (QSPI_FCLK / hz) - 1;
 
+	debug("ti_spi_set_speed: hz: %d, clock divider %d\n", hz, clk_div);
+
 	/* disable SCLK */
 	writel(readl(&priv->base->clk_ctrl) & ~QSPI_CLK_EN,
 	       &priv->base->clk_ctrl);