HID: amd_sfh: Add missing check for dma_alloc_coherent

Add check for the return value of the dma_alloc_coherent since
it may return NULL pointer if allocation fails.

Fixes: 4b2c53d ("SFH:Transport Driver to add support of AMD Sensor Fusion Hub (SFH)")
Signed-off-by: Jiasheng Jiang <[email protected]>
Acked-by: Basavaraj Natikar <[email protected]>
Signed-off-by: Benjamin Tissoires <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: JiangJias

drivers/hid/amd-sfh-hid/amd_sfh_client.c

@@ -237,6 +237,10 @@ int amd_sfh_hid_client_init(struct amd_mp2_dev *privdata)
 		in_data->sensor_virt_addr[i] = dma_alloc_coherent(dev, sizeof(int) * 8,
 								  &cl_data->sensor_dma_addr[i],
 								  GFP_KERNEL);
+		if (!in_data->sensor_virt_addr[i]) {
+			rc = -ENOMEM;
+			goto cleanup;
+		}
 		cl_data->sensor_sts[i] = SENSOR_DISABLED;
 		cl_data->sensor_requested_cnt[i] = 0;
 		cl_data->cur_hid_dev = i;