[patch -next] V4L: au0828: move dereference below sanity checks

[Dan Carpenter]

This function has sanity checks to make sure that "dev" is non-null.  I
moved the dereference down below the checks.  In the current code "dev"
is never actually null.

Signed-off-by: Dan Carpenter <erro...@gmail.com>

diff --git a/drivers/media/video/au0828/au0828-video.c 
b/drivers/media/video/au0828/au0828-video.c
index d97e0a2..7989a7b 100644
--- a/drivers/media/video/au0828/au0828-video.c
+++ b/drivers/media/video/au0828/au0828-video.c
@@ -441,7 +441,7 @@ static void au0828_copy_vbi(struct au0828_dev *dev,
                              unsigned char *outp, unsigned long len)
 {
        unsigned char *startwrite, *startread;
-       int bytesperline = dev->vbi_width;
+       int bytesperline;
        int i, j = 0;
 
        if (dev == NULL) {
@@ -464,6 +464,8 @@ static void au0828_copy_vbi(struct au0828_dev *dev,
                return;
        }
 
+       bytesperline = dev->vbi_width;
+
        if (dma_q->pos + len > buf->vb.size)
                len = buf->vb.size - dma_q->pos;
 
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