clk: zynqmp: Fixed the same if/else part error reported by coverity

This patch fixed the same if/else part error by adding the required
source select on the basis of is_pre_src check.

Signed-off-by: Vipul Kumar <vipul.kumar@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

drivers/clk/clk_zynqmp.c

@@ -103,6 +103,8 @@ static const resource_size_t zynqmp_crl_apb_clkc_base = 0xff5e0020;
 #define PLLCTRL_BYPASS_SHFT	3
 #define PLLCTRL_POST_SRC_SHFT	24
 #define PLLCTRL_POST_SRC_MASK	(0x7 << PLLCTRL_POST_SRC_SHFT)
+#define PLLCTRL_PRE_SRC_SHFT	20
+#define PLLCTRL_PRE_SRC_MASK	(0x7 << PLLCTRL_PRE_SRC_SHFT)
 
 
 #define NUM_MIO_PINS	77
@@ -310,8 +312,8 @@ static ulong zynqmp_clk_get_pll_src(ulong clk_ctrl,
 	u32 src_sel;
 
 	if (is_pre_src)
-		src_sel = (clk_ctrl & PLLCTRL_POST_SRC_MASK) >>
-			   PLLCTRL_POST_SRC_SHFT;
+		src_sel = (clk_ctrl & PLLCTRL_PRE_SRC_MASK) >>
+			   PLLCTRL_PRE_SRC_SHFT;
 	else
 		src_sel = (clk_ctrl & PLLCTRL_POST_SRC_MASK) >>
 			   PLLCTRL_POST_SRC_SHFT;