arm: mach-omap2: voltage: debugfs: fix memory leak

The temporary string holding the directory name to be created should
be released.

Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
diff --git a/arch/arm/mach-omap2/voltage.c b/arch/arm/mach-omap2/voltage.c
index ed6079c..12be525 100644
--- a/arch/arm/mach-omap2/voltage.c
+++ b/arch/arm/mach-omap2/voltage.c
@@ -471,6 +471,7 @@
 	strcat(name, vdd->voltdm.name);
 
 	vdd->debug_dir = debugfs_create_dir(name, voltage_dir);
+	kfree(name);
 	if (IS_ERR(vdd->debug_dir)) {
 		pr_warning("%s: Unable to create debugfs directory for"
 			" vdd_%s\n", __func__, vdd->voltdm.name);