drm/nouveau: nvkm: vmm: silence warning from cast

Cast the integer to a pointer-sized type first to keep the compiler
happy.

Fixes: 6b252cf ("drm/nouveau: nvkm/vmm: implement raw ops to manage uvmm")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230807163238.2091-3-dakr@redhat.com

Author: dakr

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.c

@@ -399,6 +399,8 @@ nvkm_uvmm_mthd_raw_map(struct nvkm_uvmm *uvmm, struct nvif_vmm_raw_v0 *args)
 		.no_comp = true,
 	};
 	struct nvkm_memory *memory;
+	void *argv = (void *)(uintptr_t)args->argv;
+	unsigned int argc = args->argc;
 	u64 handle = args->memory;
 	u8 refd;
 	int ret;
@@ -418,8 +420,7 @@ nvkm_uvmm_mthd_raw_map(struct nvkm_uvmm *uvmm, struct nvif_vmm_raw_v0 *args)
 		return PTR_ERR(memory);
 	}
 
-	ret = nvkm_memory_map(memory, args->offset, vmm, &vma,
-			      (void *)args->argv, args->argc);
+	ret = nvkm_memory_map(memory, args->offset, vmm, &vma, argv, argc);
 
 	nvkm_memory_unref(&vma.memory);
 	nvkm_memory_unref(&memory);