[patch] Staging: tm6000: remove unneeded check in get_next_buf()

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We dereference "buf" on the line before so if it were NULL here we
would have OOPsed earlier.  Also list_entry() never returns NULL.
And finally, we handled the situation where the list is empty
earlier in the function.

So this test isn't needed and I've removed it.

Signed-off-by: Dan Carpenter <error27@xxxxxxxxx>

diff --git a/drivers/staging/tm6000/tm6000-video.c b/drivers/staging/tm6000/tm6000-video.c
index 3fe6038..8d8b939 100644
--- a/drivers/staging/tm6000/tm6000-video.c
+++ b/drivers/staging/tm6000/tm6000-video.c
@@ -179,9 +179,6 @@ static inline void get_next_buf(struct tm6000_dmaqueue *dma_q,
 	*buf = list_entry(dma_q->active.next,
 			struct tm6000_buffer, vb.queue);
 
-	if (!buf)
-		return;
-
 	/* Cleans up buffer - Useful for testing for frame/URB loss */
 	outp = videobuf_to_vmalloc(&(*buf)->vb);
 
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