Free the memory allocated by memdup_user() in fs/sysfs/bin.c

Commit 1c8542c7 replaced kmalloc() with memdup_user() in the write()
function but also dropped the kfree(temp). The memdup_user() function
allocates memory which is never freed.
Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
Cc: Parag Warudkar <parag.warudkar@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

fs/sysfs/bin.c

@@ -171,6 +171,7 @@ static ssize_t write(struct file *file, const char __user *userbuf,
 	if (count > 0)
 		*off = offs + count;
 
+	kfree(temp);
 	return count;
 }