ACPI: APEI: remove redundant assignment to variable rc

The variable rc is being initialized with a value that is
never read and it is being updated later with a new value. The
initialization is redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <[e-mail]>
Signed-off-by: Rafael J. Wysocki <[e-mail]>

drivers/acpi/apei/hest.c

···
 void __init acpi_hest_init(void)
 {
 	acpi_status status;
-	int rc = -ENODEV;
+	int rc;
 	unsigned int ghes_count = 0;
 
 	if (hest_disable) {