ARM: OMAP2+: PM: Fix the dt return condition in pm_late_init()

Commit 1416408d {ARM: OMAP2+: PM: share some suspend-related functions
across OMAP2, 3, 4} moved suspend code to common place but now with
that change, for DT build on OMAP4, suspend hooks are not getting
registered which results in no suspend support.

The DT return condition is limited to PMIC and smartreflex
initialization and hence restrict it so that suspend ops gets
registered.

Cc: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NPaul Walmsley <paul@pwsan.com>

arch/arm/mach-omap2/pm.c

@@ -345,19 +345,19 @@ int __init omap2_common_pm_late_init(void)
 	 * a completely different mechanism.
 	 * Disable this part if a DT blob is available.
 	 */
-	if (of_have_populated_dt())
-		return 0;
+	if (!of_have_populated_dt()) {
 
-	/* Init the voltage layer */
-	omap_pmic_late_init();
-	omap_voltage_late_init();
+		/* Init the voltage layer */
+		omap_pmic_late_init();
+		omap_voltage_late_init();
 
-	/* Initialize the voltages */
-	omap3_init_voltages();
-	omap4_init_voltages();
+		/* Initialize the voltages */
+		omap3_init_voltages();
+		omap4_init_voltages();
 
-	/* Smartreflex device init */
-	omap_devinit_smartreflex();
+		/* Smartreflex device init */
+		omap_devinit_smartreflex();
+	}
 
 #ifdef CONFIG_SUSPEND
 	suspend_set_ops(&omap_pm_ops);