[Nouveau] [PATCH] drm/nouveau/i2c: do not use assignment in if condition

[sunran001 at 208suo.com]

Assignments in if condition are less readable and error-prone.  Fixes
also checkpatch warning:

ERROR: do not use assignment in if condition

Signed-off-by: Ran Sun <sunran001 at 208suo.com>
---
  drivers/gpu/drm/nouveau/nvkm/subdev/i2c/busgf119.c | 3 ++-
  1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/busgf119.c 
b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/busgf119.c
index 96bbdda0f439..a1cf406ff141 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/busgf119.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/busgf119.c
@@ -85,7 +85,8 @@ gf119_i2c_bus_new(struct nvkm_i2c_pad *pad, int id, u8 
drive,
  {
      struct gf119_i2c_bus *bus;

-    if (!(bus = kzalloc(sizeof(*bus), GFP_KERNEL)))
+    bus = kzalloc(sizeof(*bus), GFP_KERNEL);
+    if (!bus)
          return -ENOMEM;
      *pbus = &bus->base;