drivers/rtc/rtc-mrst.c: remove redundant dev_set_drvdata

Driver core sets the driver data to NULL upon device_release or on probe
failure.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/rtc/rtc-mrst.c b/drivers/rtc/rtc-mrst.c
index 315209d9..e2436d1 100644
--- a/drivers/rtc/rtc-mrst.c
+++ b/drivers/rtc/rtc-mrst.c
@@ -380,7 +380,6 @@
 cleanup1:
 	rtc_device_unregister(mrst_rtc.rtc);
 cleanup0:
-	dev_set_drvdata(dev, NULL);
 	mrst_rtc.dev = NULL;
 	release_mem_region(iomem->start, resource_size(iomem));
 	dev_err(dev, "rtc-mrst: unable to initialise\n");
@@ -412,7 +411,6 @@
 	mrst->iomem = NULL;
 
 	mrst->dev = NULL;
-	dev_set_drvdata(dev, NULL);
 }
 
 #ifdef	CONFIG_PM