gvt_vgpu_err means something goes wrong. We need the error propagates to
kernel message by default.
Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
 #define gvt_vgpu_err(fmt, args...)                                     \
 do {                                                                   \
        if (IS_ERR_OR_NULL(vgpu))                                       \
-               pr_debug("gvt: "fmt, ##args);                   \
+               pr_err("gvt: "fmt, ##args);                     \
        else                                                            \
-               pr_debug("gvt: vgpu %d: "fmt, vgpu->id, ##args);\
+               pr_err("gvt: vgpu %d: "fmt, vgpu->id, ##args);\
 } while (0)
 
 #define gvt_dbg_core(fmt, args...) \