[5/8,media] videobuf-dma-sg: Move two assignments for error codes in __videobuf_mmap_mapper()

Commit Message

SF Markus Elfring Dec. 26, 2016, 8:50 p.m. UTC

From: Markus Elfring <[e-mail]>
Date: Mon, 26 Dec 2016 20:48:50 +0100

Move two assignments for the local variable "retval" so that these statements
will only be executed if a previous action failed in this function.

Signed-off-by: Markus Elfring <[e-mail]>
---
 drivers/media/v4l2-core/videobuf-dma-sg.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

Patch

diff --git a/drivers/media/v4l2-core/videobuf-dma-sg.c b/drivers/media/v4l2-core/videobuf-dma-sg.c
index 9ccdc11aa016..d09ddf2e56fe 100644
--- a/drivers/media/v4l2-core/videobuf-dma-sg.c
+++ b/drivers/media/v4l2-core/videobuf-dma-sg.c
@@ -596,8 +596,6 @@  static int __videobuf_mmap_mapper(struct videobuf_queue *q,
 	unsigned int first, last, size = 0, i;
 	int retval;
 
-	retval = -EINVAL;
-
 	BUG_ON(!mem);
 	MAGIC_CHECK(mem->magic, MAGIC_SG_MEM);
 
@@ -613,16 +611,18 @@  static int __videobuf_mmap_mapper(struct videobuf_queue *q,
 	if (!size) {
 		dprintk(1, "mmap app bug: offset invalid [offset=0x%lx]\n",
 				(vma->vm_pgoff << PAGE_SHIFT));
+		retval = -EINVAL;
 		goto done;
 	}
 
 	last = first;
 
 	/* create mapping + update buffer list */
-	retval = -ENOMEM;
 	map = kmalloc(sizeof(struct videobuf_mapping), GFP_KERNEL);
-	if (!map)
+	if (!map) {
+		retval = -ENOMEM;
 		goto done;
+	}
 
 	size = 0;
 	for (i = first; i <= last; i++) {