staging: qlge: Remove gotos from ql_set_mac_addr_reg

As suggested by Joe Perches, this patch removes the 'exit' label
from the ql_set_mac_addr_reg function and replaces the goto
statements with break statements.

Signed-off-by: Rylan Dmello <mail@rylan.coffee>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/a6f485e43eb55e8fdc64a7a346cb0419b55c3cb6.1588209862.git.mail@rylan.coffee


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>