freedreno/msm: remove dead error path

`ring` cannot be non-null, so the label reduces to a simple return.
Then, there is no point initialising `ring` just to overwrite it before
anyone reads it.

Signed-off-by: Eric Engestrom <eric@engestrom.ch>
Reviewed-by: Rob Clark <robdclark@gmail.com>
diff --git a/freedreno/msm/msm_ringbuffer.c b/freedreno/msm/msm_ringbuffer.c
index c3b2ede..5b28fea 100644
--- a/freedreno/msm/msm_ringbuffer.c
+++ b/freedreno/msm/msm_ringbuffer.c
@@ -589,12 +589,12 @@
 		uint32_t size)
 {
 	struct msm_ringbuffer *msm_ring;
-	struct fd_ringbuffer *ring = NULL;
+	struct fd_ringbuffer *ring;
 
 	msm_ring = calloc(1, sizeof(*msm_ring));
 	if (!msm_ring) {
 		ERROR_MSG("allocation failed");
-		goto fail;
+		return NULL;
 	}
 
 	if (size == 0) {
@@ -614,8 +614,4 @@
 	ring_cmd_new(ring, size);
 
 	return ring;
-fail:
-	if (ring)
-		fd_ringbuffer_del(ring);
-	return NULL;
 }