drm/amdgpu: Fix memory leaks at amdgpu_init() error path

amdgpu driver checks vgacon_text_force() after some initializations
but without cleaning up.  This will result in leaks.

Move the check of vgacon_text_force() to the beginning of
amdgpu_init() for fixing it and also for optimization.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

@@ -922,6 +922,11 @@ static int __init amdgpu_init(void)
 {
 	int r;
 
+	if (vgacon_text_force()) {
+		DRM_ERROR("VGACON disables amdgpu kernel modesetting.\n");
+		return -EINVAL;
+	}
+
 	r = amdgpu_sync_init();
 	if (r)
 		goto error_sync;
@@ -930,10 +935,6 @@ static int __init amdgpu_init(void)
 	if (r)
 		goto error_fence;
 
-	if (vgacon_text_force()) {
-		DRM_ERROR("VGACON disables amdgpu kernel modesetting.\n");
-		return -EINVAL;
-	}
 	DRM_INFO("amdgpu kernel modesetting enabled.\n");
 	driver = &kms_driver;
 	pdriver = &amdgpu_kms_pci_driver;