omap: mailbox: trivial cleanups

And fix a few compilation warnings.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
diff --git a/arch/arm/mach-omap2/mailbox.c b/arch/arm/mach-omap2/mailbox.c
index 763272c..8c1070c 100644
--- a/arch/arm/mach-omap2/mailbox.c
+++ b/arch/arm/mach-omap2/mailbox.c
@@ -131,7 +131,7 @@
 	}
 
 	l = mbox_read_reg(MAILBOX_REVISION);
-	pr_info("omap mailbox rev %d.%d\n", (l & 0xf0) >> 4, (l & 0x0f));
+	pr_debug("omap mailbox rev %d.%d\n", (l & 0xf0) >> 4, (l & 0x0f));
 
 	if (cpu_is_omap44xx())
 		l = OMAP4_SMARTIDLE;
@@ -300,8 +300,6 @@
 	.irqdisable	= MAILBOX_IRQENABLE(0),
 };
 
-
-
 /* OMAP4 specific data structure. Use the cpu_is_omap4xxx()
 to use this*/
 static struct omap_mbox2_priv omap2_mbox_1_priv = {
@@ -357,7 +355,6 @@
 };
 EXPORT_SYMBOL(mbox_2_info);
 
-
 #if defined(CONFIG_ARCH_OMAP2420) /* IVA */
 static struct omap_mbox2_priv omap2_mbox_iva_priv = {
 	.tx_fifo = {
@@ -443,6 +440,11 @@
 #endif
 	return 0;
 
+#if defined(CONFIG_ARCH_OMAP2420) /* IVA */
+err_iva1:
+	omap_mbox_unregister(&mbox_dsp_info);
+#endif
+
 err_dsp:
 	iounmap(mbox_base);
 	return ret;