ARM: davinci: PM: Do not free useful resources in normal path in 'davinci_pm_init'

It is wrong to iounmap resources in the normal path of davinci_pm_init()

The 3 ioremap'ed fields of 'pm_config' can be accessed later on in other
functions, so we should return 'success' instead of unrolling everything.

Fixes: aa9aa1ec ("ARM: davinci: PM: rework init, remove platform device")
Signed-off-by: NChristophe JAILLET <christophe.jaillet@wanadoo.fr>
[nsekhar@ti.com: commit message and minor style fixes]
Signed-off-by: NSekhar Nori <nsekhar@ti.com>

arch/arm/mach-davinci/pm.c

@@ -162,6 +162,8 @@ int __init davinci_pm_init(void)
 
 	suspend_set_ops(&davinci_pm_ops);
 
+	return 0;
+
 no_sram_mem:
 	iounmap(pm_config.ddrpsc_reg_base);
 no_ddrpsc_mem: