[PATCH] [media] vpif_display: fix return value check in vpif_reqbufs()

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From: Wei Yongjun <yongjun_wei@xxxxxxxxxxxxxxxxx>

In case of error, the function vb2_dma_contig_init_ctx() returns
ERR_PTR() and never returns NULL. The NULL test in the return value
check should be replaced with IS_ERR().

dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)

Signed-off-by: Wei Yongjun <yongjun_wei@xxxxxxxxxxxxxxxxx>
---
 drivers/media/platform/davinci/vpif_display.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/davinci/vpif_display.c b/drivers/media/platform/davinci/vpif_display.c
index b716fbd..5453bbb 100644
--- a/drivers/media/platform/davinci/vpif_display.c
+++ b/drivers/media/platform/davinci/vpif_display.c
@@ -972,9 +972,9 @@ static int vpif_reqbufs(struct file *file, void *priv,
 	}
 	/* Initialize videobuf2 queue as per the buffer type */
 	common->alloc_ctx = vb2_dma_contig_init_ctx(vpif_dev);
-	if (!common->alloc_ctx) {
+	if (IS_ERR(common->alloc_ctx)) {
 		vpif_err("Failed to get the context\n");
-		return -EINVAL;
+		return PTR_ERR(common->alloc_ctx);
 	}
 	q = &common->buffer_queue;
 	q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;

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