ARM: OMAP3: Delete an unnecessary variable initialisation in omap3xxx_hwmod_init()

The local variable "bus" will eventually be set to an appropriate pointer
a bit later. Thus omit the explicit initialisation at the beginning.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/omap_hwmod_3xxx_data.c

@@ -3148,7 +3148,7 @@ int __init omap3xxx_hwmod_init(void)
 	int r;
 	struct omap_hwmod_ocp_if **h = NULL, **h_gp = NULL, **h_sham = NULL;
 	struct omap_hwmod_ocp_if **h_aes = NULL;
-	struct device_node *bus = NULL;
+	struct device_node *bus;
 	unsigned int rev;
 
 	omap_hwmod_init();