arm64: hyperv: Do not call hyperv_init if not on Hyper-V

Kernel doesn't boot on baremetal as we try to initialize Hyper-V
related fields. So, call hyperv_init only if we are running as a
Hyper-V guest

Signed-off-by: Vineeth Remanan Pillai <[email protected]>
Reported-by: Praveen Paladugu <[email protected]>
Tested-by: Praveen Paladugu <[email protected]>

Author: Vineeth Remanan Pillai

arch/arm64/hyperv/mshyperv.c

@@ -89,6 +89,12 @@ static int __init hyperv_init(void)
 {
 	int	i;
 
+	/*
+	 * Return if not running as a Hyper-V guest.
+	 */
+	if (!hyperv_initialized)
+		return 0;
+
 	/* Allocate and initialize percpu VP index array */
 	hv_max_vp_index = num_possible_cpus();
 	hv_vp_index = kmalloc_array(hv_max_vp_index, sizeof(*hv_vp_index),