[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/aux.c | 3 ++-
  1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/aux.c 
b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/aux.c
index d063d0dc13c5..098051d3755c 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/aux.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/aux.c
@@ -209,7 +209,8 @@ nvkm_i2c_aux_new_(const struct nvkm_i2c_aux_func 
*func,
            struct nvkm_i2c_pad *pad, int id,
            struct nvkm_i2c_aux **paux)
  {
-    if (!(*paux = kzalloc(sizeof(**paux), GFP_KERNEL)))
+    *paux = kzalloc(sizeof(**paux), GFP_KERNEL);
+    if (!*paux)
          return -ENOMEM;
      return nvkm_i2c_aux_ctor(func, pad, id, *paux);
  }