drivers/gpu/drm/drm_buffer.c: remove unnecessary null test before kfree

This patch removes special case of last element and loops from idx to 0.

Cc: David Airlie <[e-mail]>
Cc: [e-mail]
Signed-off-by: Fabian Frederick <[e-mail]>
Signed-off-by: Daniel Vetter <[e-mail]>

drivers/gpu/drm/drm_buffer.c

···
 
 error_out:
 
-	/* Only last element can be null pointer so check for it first. */
-	if ((*buf)->data[idx])
-		kfree((*buf)->data[idx]);
-
-	for (--idx; idx >= 0; --idx)
+	for (; idx >= 0; --idx)
 		kfree((*buf)->data[idx]);
 
 	kfree(*buf);