fix(zynqmp): separate EM from PM SMCs

There is no reason to use else and concatenate EM SMCs with PM SMCs via
if/else pair. Also synchronize comment location.

Change-Id: I147f9d193574c2417c9d92d41a675e35ba282c9f
Signed-off-by: Michal Simek <michal.simek@amd.com>
diff --git a/plat/xilinx/zynqmp/sip_svc_setup.c b/plat/xilinx/zynqmp/sip_svc_setup.c
index 4ce9b8a..e210736 100644
--- a/plat/xilinx/zynqmp/sip_svc_setup.c
+++ b/plat/xilinx/zynqmp/sip_svc_setup.c
@@ -66,8 +66,10 @@
 	if (is_em_fid(smc_fid)) {
 		return em_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle,
 					flags);
-	} else if (is_pm_fid(smc_fid)) {
+	}
+
 	/* Let PM SMC handler deal with PM-related requests */
+	if (is_pm_fid(smc_fid)) {
 		return pm_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle,
 				      flags);
 	}