From 18422e686ef043b9abe004326ac9ffa1e38b81ec Mon Sep 17 00:00:00 2001
From: "Mark A. Greer" <mgreer@animalcreek.com>
Date: Tue, 25 Mar 2014 08:54:39 -0700
Subject: [PATCH] NFC: trf7970a: Don't return value from
 trf7970a_switch_rf_on()

trf7970a_switch_rf_on() no longer returns anything other than 0 so make
it void and clean up the code that checks for errors when its called.

Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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