tpm: fix the return code, if the eventlog buffer is full

We currently return 'No space left on device' if the eventlong buffer
we allocated is not enough. On a similar check later on that function
during the call to tcg2_log_init() we return 'No buffer space
available'. So switch both error codes to -ENOBUFS since we are always
checking a buffer and not a device.

Fixes: commit 97707f1 ("tpm: Support boot measurements")
Reviewed-by: Heinrich Schuchardt <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Signed-off-by: Ilias Apalodimas <[email protected]>

lib/tpm-v2.c

@@ -554,7 +554,7 @@ int tcg2_log_prepare_buffer(struct udevice *dev, struct tcg2_event_log *elog,
 		if (elog->log_size) {
 			if (log.found) {
 				if (elog->log_size < log.log_position)
-					return -ENOSPC;
+					return -ENOBUFS;
 
 				/*
 				 * Copy the discovered log into the user buffer