soc: bcm: brcmstb: biuctrl: Avoid double of_node_put()

Commit 9a073d4f ("soc: bcm: brcmstb: biuctrl: Add missing
of_node_put()") added what was thought to be a missing of_node_put() but
now causes a double of_node_put() to be called, once from
setup_hifcpubiuctrl_regs() and another time from brcmstb_biuctrl_init().

Ensure that setup_hifcpubiuctrl_regs() is not calling of_node_put()
since it is not obvious it does that on one of its parameters.

Fixes: 9a073d4f ("soc: bcm: brcmstb: biuctrl: Add missing of_node_put()")
Reported-by: Jim Quinlan <jim2101024@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Change-Id: I1c405c36c2f06c8b8c0f684143b7a52db7e809f0

drivers/soc/bcm/brcmstb/biuctrl.c

@@ -288,7 +288,6 @@ static int __init setup_hifcpubiuctrl_regs(struct device_node *np)
 	if (BRCM_ID(family_id) == 0x7260 && BRCM_REV(family_id) == 0)
 		cpubiuctrl_regs = b53_cpubiuctrl_no_wb_regs;
 out:
-	of_node_put(np);
 	return ret;
 }