x86: fix DMI ioremap leak

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index 0b24a11..5f9d0bc 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -349,6 +349,7 @@
 			rc = dmi_present(q);
 			if (!rc) {
 				dmi_available = 1;
+				dmi_iounmap(p, 0x10000);
 				return;
 			}
 		}