[2.6 patch] drm_rmmap_ioctl(): remove dead code

[Adrian Bunk <bunk@stusta.de>]

This patch removes some obviously dead code spotted by the Coverity 
checker.

Signed-off-by: Adrian Bunk <bunk@stusta.de>

---
--- linux-2.6.22-rc6-mm1/drivers/char/drm/drm_bufs.c.old	2007-07-23 01:09:04.000000000 +0200
+++ linux-2.6.22-rc6-mm1/drivers/char/drm/drm_bufs.c	2007-07-23 01:09:22.000000000 +0200
@@ -476,15 +476,10 @@ int drm_rmmap_ioctl(struct inode *inode,
 	if (list_empty(&dev->maplist) || !map) {
 		mutex_unlock(&dev->struct_mutex);
 		return -EINVAL;
 	}
 
-	if (!map) {
-		mutex_unlock(&dev->struct_mutex);
-		return -EINVAL;
-	}
-
 	/* Register and framebuffer maps are permanent */
 	if ((map->type == _DRM_REGISTERS) || (map->type == _DRM_FRAME_BUFFER)) {
 		mutex_unlock(&dev->struct_mutex);
 		return 0;
 	}

-
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