cmd: tlv_eeprom: return after successful read from EEPROM

Commit f6eff35b8c ("cmd: tlv_eeprom: handle -ENODEV error from
read_eeprom function") removed the needed 'return 0' after a successful
read. As a result, the usage message is shown when 'tlv_eeprom read' is
successfully called.

Let's fix it by adding the needed 'return 0'.

Signed-off-by: Martin Schiller <ms@dev.tdt.de>
Reviewed-by: Stefan Roese <sr@denx.de>

cmd/tlv_eeprom.c

@@ -476,6 +476,7 @@ int do_tlv_eeprom(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 
 		printf("EEPROM data loaded from device to memory.\n");
 		has_been_read = 1;
+		return 0;
 	}
 
 	// Subsequent commands require that the EEPROM has already been read.